What is the unit of electric current?
a) Volt
b) Ampere
c) Ohm
d) Watt
Answer: b) Ampere
What is the relationship between current, voltage, and resistance in a circuit?
a) Ohm’s law
b) Faraday’s law
c) Kirchhoff’s law
d) Coulomb’s law
Answer: a) Ohm’s law
Which of the following materials is a good conductor of electricity?
a) Rubber
b) Wood
c) Copper
d) Glass
Answer: c) Copper
What is the symbol for a resistor in an electric circuit diagram?
a) R
b) C
c) L
d) V
Answer: a) R
What is the purpose of a fuse in an electric circuit?
a) To regulate the voltage
b) To increase the resistance
c) To protect against overcurrent
d) To convert AC to DC
Answer: c) To protect against overcurrent
What is the direction of conventional current flow in a circuit?
a) From positive to negative
b) From negative to positive
c) It depends on the type of circuit
d) It doesn’t have a specific direction
Answer: a) From positive to negative
Which of the following devices converts electrical energy into mechanical energy?
a) Resistor
b) Capacitor
c) Inductor
d) Motor
Answer: d) Motor
What is the formula to calculate electrical power in a circuit?
a) P = IV
b) P = IR
c) P = V^2/R
d) P = I^2R
Answer: c) P = V^2/R
What is the unit of electrical power?
a) Volt
b) Ampere
c) Ohm
d) Watt
Answer: d) Watt
What happens to the resistance of a wire when its length is doubled?
a) It doubles
b) It becomes half
c) It quadruples
d) It remains the same
Answer: a) It doubles
What happens to the resistance of a wire when its cross-sectional area is doubled?
a) It doubles
b) It becomes half
c) It quadruples
d) It remains the same
Answer: b) It becomes half
What happens to the resistance of a wire when its temperature increases?
a) It increases
b) It decreases
c) It remains the same
d) It depends on the material
Answer: a) It increases
What is the function of a capacitor in an electric circuit?
a) To store electrical energy
b) To regulate voltage
c) To increase current flow
d) To convert AC to DC
Answer: a) To store electrical energy
What is the symbol for a capacitor in an electric circuit diagram?
a) R
b) C
c) L
d) V
Answer: b) C
What is the unit of electric charge?
a) Volt
b) Ampere
c) Coulomb
d) Ohm
Answer: c) Coulomb
What is the formula to calculate electric power in terms of voltage and current?
a) P = IV
b) P = IR
c) P = V^2/R
d) P = I^2R
Answer: a) P = IV
What is the relationship between voltage and current in a series circuit?
a) Voltage is the same across all components
b) Current is the same across all components
c) Voltage and current vary across components
d) None of the above
Answer: b) Current is the same across all components
What is the relationship between voltage and current in a parallel circuit?
a) Voltage is the same across all components
b) Current is the same across all components
c) Voltage and current vary across components
d) None of the above
Answer: a) Voltage is the same across all components
What is the relationship between resistance and current in a circuit?
a) Directly proportional
b) Inversely proportional
c) No relationship
d) It depends on the circuit configuration
Answer: b) Inversely proportional
What is the unit of electric potential difference?
a) Volt
b) Ampere
c) Coulomb
d) Ohm
Answer: a) Volt
What is the function of an ammeter in an electric circuit?
a) To measure voltage
b) To measure current
c) To measure resistance
d) To measure power
Answer: b) To measure current
What is the function of a voltmeter in an electric circuit?
a) To measure voltage
b) To measure current
c) To measure resistance
d) To measure power
Answer: a) To measure voltage
What is the relationship between power, voltage, and current in an electric circuit?
a) P = IV
b) P = IR
c) P = V^2/R
d) P = I^2R
Answer: a) P = IV
What is the unit of electrical resistance?
a) Volt
b) Ampere
c) Ohm
d) Watt
Answer: c) Ohm
What is the function of a diode in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert AC to DC
d) To store electrical energy
Answer: c) To convert AC to DC
What is the symbol for a diode in an electric circuit diagram?
a) D
b) R
c) C
d) V
Answer: a) D
What is the function of an inductor in an electric circuit?
a) To store electrical energy
b) To regulate voltage
c) To increase current flow
d) To convert AC to DC
Answer: c) To increase current flow
What is the symbol for an inductor in an electric circuit diagram?
a) R
b) C
c) L
d) V
Answer: c) L
What is the relationship between power and resistance in a circuit?
a) Directly proportional
b) Inversely proportional
c) No relationship
d) It depends on the circuit configuration
Answer: c) No relationship
What is the relationship between voltage and resistance in a circuit?
a) Directly proportional
b) Inversely proportional
c) No relationship
d) It depends on the circuit configuration
Answer: a) Directly proportional
What is the function of a transformer in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert AC to DC
d) To store electrical energy
Answer: a) To regulate voltage
What is the symbol for a transformer in an electric circuit diagram?
a) T
b) R
c) C
d) V
Answer: a) T
What is the purpose of a switch in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert AC to DC
d) To control the flow of current
Answer: d) To control the flow of current
What is the symbol for a switch in an electric circuit diagram?
a) S
b) R
c) C
d) V
Answer: a) S
What is the function of a relay in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert AC to DC
d) To control the flow of current
Answer: d) To control the flow of current
What is the symbol for a relay in an electric circuit diagram?
a) RLY
b) R
c) C
d) V
Answer: a) RLY
What is the purpose of a resistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a capacitor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of an inductor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a transformer in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: a) To regulate voltage
What is the purpose of a diode in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a transistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a motor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert electrical energy into mechanical energy
d) To control the flow of current
Answer: c) To convert electrical energy into mechanical energy
What is the purpose of a generator in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert mechanical energy into electrical energy
d) To control the flow of current
Answer: c) To convert mechanical energy into electrical energy
What is the purpose of a battery in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of a resistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a capacitor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of an inductor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a transformer in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: a) To regulate voltage
What is the purpose of a diode in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a transistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a motor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert electrical energy into mechanical energy
d) To control the flow of current
Answer: c) To convert electrical energy into mechanical energy
What is the purpose of a generator in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert mechanical energy into electrical energy
d) To control the flow of current
Answer: c) To convert mechanical energy into electrical energy
What is the purpose of a battery in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of a resistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a capacitor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of an inductor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a transformer in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: a) To regulate voltage
What is the purpose of a diode in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a transistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a motor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert electrical energy into mechanical energy
d) To control the flow of current
Answer: c) To convert electrical energy into mechanical energy
What is the purpose of a generator in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert mechanical energy into electrical energy
d) To control the flow of current
Answer: c) To convert mechanical energy into electrical energy
What is the purpose of a battery in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of a resistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a capacitor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: c) To store electrical energy
What is the purpose of an inductor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: b) To increase current flow
What is the purpose of a transformer in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: a) To regulate voltage
What is the purpose of a diode in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a transistor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To store electrical energy
d) To control the flow of current
Answer: d) To control the flow of current
What is the purpose of a motor in an electric circuit?
a) To regulate voltage
b) To increase current flow
c) To convert electrical energy into mechanical energy
d) To control the flow of current
Answer: c) To convert electrical energy into mechanical energy
