# Work, Energy, and Power MCQs with Answers

Work, Energy, and Power MCQs are very important test and often asked by various testing services and competitive exams around the world. Here you will find all the Important Work, Energy, and Power MCQs for Preparation.

The student can clear their concepts for Work, Energy, and Power online quiz by attempting it. Doing MCQs based Work, Energy, and Power will help you to check your understanding and identify areas of improvement.

## Work, Energy, and Power Online MCQs with Answers

Work is defined as the product of:
a) Force and displacement
b) Mass and acceleration
c) Velocity and time
d) Energy and power

a) Force and displacement

The SI unit of work is the:
a) Newton
b) Watt
c) Joule
d) Kilogram

c) Joule

Which of the following statements is true about work?
a) Work is always positive.
b) Work is always negative.
c) Work can be positive or negative depending on the direction of force and displacement.
d) Work is always zero.

c) Work can be positive or negative depending on the direction of force and displacement.

The work done by a force on an object is maximum when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

a) 0 degrees

The energy possessed by an object due to its motion is called:
a) Potential energy
b) Kinetic energy
c) Mechanical energy
d) Thermal energy

b) Kinetic energy

The potential energy of an object depends on its:
a) Mass and velocity
b) Height and mass
c) Velocity and acceleration
d) Weight and displacement

b) Height and mass

The law of conservation of energy states that:
a) Energy cannot be created or destroyed, only transferred or transformed.
b) Energy can be created or destroyed.
c) Energy can be created but not destroyed.
d) Energy can be destroyed but not created.

a) Energy cannot be created or destroyed, only transferred or transformed.

The SI unit of power is the:
a) Joule
b) Watt
c) Newton
d) Kilogram

b) Watt

Power is defined as the rate at which work is:
a) Transferred
b) Created
c) Destroyed
d) Done

d) Done

The work-energy theorem states that the work done on an object is equal to the change in its:
a) Kinetic energy
b) Potential energy
c) Total mechanical energy
d) Power

c) Total mechanical energy

Which of the following statements is true about the conservation of mechanical energy in a system?
a) Mechanical energy is always conserved in a system.
b) Mechanical energy is conserved only in the absence of friction.
c) Mechanical energy is conserved only in the presence of friction.
d) Mechanical energy cannot be conserved.

b) Mechanical energy is conserved only in the absence of friction.

The work done by a force on an object can be calculated by multiplying the:
a) Force and time
b) Displacement and time
c) Force and displacement
d) Mass and velocity

c) Force and displacement

The energy stored in a stretched or compressed object, such as a spring, is called:
a) Gravitational potential energy
b) Elastic potential energy
c) Chemical potential energy
d) Nuclear potential energy

b) Elastic potential energy

The rate at which work is done or energy is transferred or transformed is called:
a) Force
b) Momentum
c) Power
d) Energy

c) Power

Which of the following factors affect the amount of work done on an object?
a) Force applied and displacement
b) Time taken and velocity
c) Mass and acceleration
d) Height and weight

a) Force applied and displacement

The work done on an object is zero when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

a) Perpendicular to each other

The unit of energy is the same as the unit of:
a) Power
b) Force
c) Work
d) Momentum

c) Work

Which of the following statements is true about the concept of work?
a) Work is a scalar quantity.
b) Work is a vector quantity.
c) Work has both magnitude and direction.
d) Work is a measure of the force exerted on an object.

a) Work is a scalar quantity.

The work done by a force on an object can be negative when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

d) 180 degrees

Which of the following statements is true about the concept of power?
a) Power is the amount of work done by an object.
b) Power is the rate at which energy is transferred or transformed.
c) Power is a measure of an object’s potential energy.
d) Power is a measure of an object’s kinetic energy.

b) Power is the rate at which energy is transferred or transformed.

The work done by a force on an object can be positive when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

a) 0 degrees

Which of the following statements is true about potential energy?
a) Potential energy is the energy possessed by an object due to its motion.
b) Potential energy is the energy possessed by an object due to its position or condition.
c) Potential energy is the energy possessed by an object due to its temperature.
d) Potential energy is the energy possessed by an object due to its velocity.

b) Potential energy is the energy possessed by an object due to its position or condition.

The work done on an object is negative when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

d) In opposite directions

The rate at which work is done or energy is transferred or transformed is equal to the:
a) Mass of the object
b) Time taken to do the work
c) Distance covered by the object
d) Force applied to the object

d) Force applied to the object

The work done by a force on an object is maximum when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

c) In the same direction

The energy possessed by an object due to its position or condition is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

b) Potential energy

The work-energy theorem relates the concepts of:
a) Work and power
b) Power and energy
c) Work and energy
d) Work and force

c) Work and energy

The ability of an object to do work or cause a change is called:
a) Power
b) Energy
c) Force
d) Momentum

b) Energy

The energy possessed by an object due to its motion is directly proportional to its:
a) Mass
b) Velocity
c) Acceleration
d) Force

b) Velocity

The work done on an object is zero when the force and displacement are:
a) Parallel to each other
b) In the same direction
c) In opposite directions
d) Perpendicular to each other

d) Perpendicular to each other

The unit of power is equal to:
a) Joule per second
b) Newton per second
c) Kilogram per second
d) Meter per second

a) Joule per second

The rate at which work is done or energy is transferred or transformed is dependent on:
a) The mass of the object
b) The time taken to do the work
c) The distance covered by the object
d) The force applied to the object

d) The force applied to the object

The work done by a force on an object can be positive, negative, or zero depending on the:
a) Magnitude of the force
b) Magnitude of the displacement
c) Angle between the force and displacement
d) Mass of the object

c) Angle between the force and displacement

Which of the following statements is true about the concept of power?
a) Power is a scalar quantity.
b) Power is a vector quantity.
c) Power has both magnitude and direction.
d) Power is a measure of the force exerted on an object.

a) Power is a scalar quantity.

The work done by a force on an object is maximum when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

a) 0 degrees

The potential energy of an object at a certain height is equal to the:
a) Mass of the object multiplied by the height
b) Weight of the object multiplied by the height
c) Mass of the object multiplied by the acceleration due to gravity
d) Weight of the object multiplied by the acceleration due to gravity

b) Weight of the object multiplied by the height

The rate at which work is done or energy is transferred or transformed is equal to the:
a) Time taken to do the work divided by the distance covered
b) Distance covered divided by the time taken to do the work
c) Work done divided by the time taken
d) Energy transferred or transformed divided by the time taken

c) Work done divided by the time taken

Which of the following statements is true about the conservation of energy?
a) Energy is always conserved in any physical process.
b) Energy is conserved only in certain physical processes.
c) Energy can be created or destroyed in any physical process.
d) Energy is not conserved in any physical process.

a) Energy is always conserved in any physical process.

The energy possessed by an object due to its motion is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

a) Kinetic energy

The work done by a force on an object can be negative when the force and displacement are:
a) In the same direction
b) In opposite directions
c) Perpendicular to each other
d) Parallel to each other

b) In opposite directions

The energy possessed by an object due to its position or condition is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

b) Potential energy

The rate at which work is done or energy is transferred or transformed is dependent on:
a) The mass of the object
b) The time taken to do the work
c) The distance covered by the object
d) The force applied to the object

d) The force applied to the object

The work-energy theorem states that the work done on an object is equal to the change in its:
a) Kinetic energy
b) Potential energy
c) Total mechanical energy
d) Power

c) Total mechanical energy

The work done by a force on an object can be zero when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

c) 90 degrees

The energy possessed by an object due to its motion is directly proportional to its:
a) Mass
b) Velocity
c) Acceleration
d) Force

b) Velocity

The work done on an object is negative when the force and displacement are:
a) Parallel to each other
b) In the same direction
c) In opposite directions
d) Perpendicular to each other

c) In opposite directions

The unit of power is the same as the unit of:
a) Work
b) Energy
c) Force
d) Momentum

a) Work

Which of the following statements is true about work?
a) Work is always positive.
b) Work is always negative.
c) Work can be positive or negative depending on the direction of force and displacement.
d) Work is always zero.

c) Work can be positive or negative depending on the direction of force and displacement.

The energy possessed by an object due to its position or condition is directly proportional to its:
a) Mass
b) Height
c) Velocity
d) Force

b) Height

The work done by a force on an object can be positive when the force and displacement are:
a) In the same direction
b) In opposite directions
c) Perpendicular to each other
d) Parallel to each other

a) In the same direction

Which of the following statements is true about the concept of work?
a) Work is a measure of an object’s potential energy.
b) Work is a measure of an object’s kinetic energy.
c) Work is a measure of an object’s total mechanical energy.
d) Work is a measure of the force exerted on an object.

d) Work is a measure of the force exerted on an object.

The work done by a force on an object is zero when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

a) Perpendicular to each other

The unit of work is equal to:
a) Joule per second
b) Newton per second
c) Kilogram per second
d) Meter per second

a) Joule per second

Which of the following factors affect the amount of work done on an object?
a) Force applied and displacement
b) Time taken and velocity
c) Mass and acceleration
d) Height and weight

a) Force applied and displacement

The energy possessed by an object due to its motion is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

a) Kinetic energy

The work done by a force on an object is negative when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

d) In opposite directions

The energy possessed by an object due to its position or condition is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

b) Potential energy

The rate at which work is done or energy is transferred or transformed is equal to the:
a) Mass of the object
b) Time taken to do the work
c) Distance covered by the object
d) Force applied to the object

d) Force applied to the object

The work done by a force on an object is maximum when the angle between the force and displacement is:
a) 0 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees

a) 0 degrees

The energy possessed by an object due to its position or condition is directly proportional to its:
a) Mass
b) Height
c) Velocity
d) Force

b) Height

The work-energy theorem relates the concepts of:
a) Work and power
b) Power and energy
c) Work and energy
d) Work and force

c) Work and energy

The ability of an object to do work or cause a change is called:
a) Power
b) Energy
c) Force
d) Momentum

b) Energy

The energy possessed by an object due to its motion is directly proportional to its:
a) Mass
b) Velocity
c) Acceleration
d) Force

b) Velocity

The work done on an object is zero when the force and displacement are:
a) Parallel to each other
b) In the same direction
c) In opposite directions
d) Perpendicular to each other

d) Perpendicular to each other

The unit of power is equal to:
a) Joule per second
b) Newton per second
c) Kilogram per second
d) Meter per second

a) Joule per second

The rate at which work is done or energy is transferred or transformed is dependent on:
a) The mass of the object
b) The time taken to do the work
c) The distance covered by the object
d) The force applied to the object

d) The force applied to the object

The work done on an object is negative when the force and displacement are:
a) Perpendicular to each other
b) Parallel to each other
c) In the same direction
d) In opposite directions

d) In opposite directions

The energy possessed by an object due to its position or condition is called:
a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

b) Potential energy

The rate at which work is done or energy is transferred or transformed is dependent on:
a) The mass of the object
b) The time taken to do the work
c) The distance covered by the object
d) The force applied to the object