Electricity and Magnetism Quiz: Electric Circuits

What is the function of a resistor in an electric circuit?

• Generates electric current

• Increases the flow of electric current

• Limits the flow of electric current

• Stops the flow of electric current

What is the unit of electric potential difference?

• Ampere (A)

• Ohm (Ω)

• Volt (V)

• Joule (J)

What is the formula to calculate electric power?

• P = V * I

• P = I / V

• P = V / I

• P = V + I

What is the role of a switch in an electric circuit?

• To generate heat in the circuit

• To store electricity in the circuit

• To change the color of the electricity in the circuit

• To open or close the circuit, controlling the flow of electricity.

What is the unit of resistance?

• watts

• ohms (Ω)

• amps

• volts

What is the formula to calculate resistance in a circuit?

• R = V/I

• R = V x I

• R = I/V

• R = V + I

What is the purpose of a fuse in an electric circuit?

• To break the circuit if the current exceeds a safe level

• To increase the current in the circuit

• To reduce the voltage in the circuit

• To make the circuit more efficient

What is the difference between series and parallel circuits?

• Series circuits are used for AC current, while parallel circuits are used for DC current.

• There is no difference between series and parallel circuits.

• In a series circuit, the current has multiple paths to flow through different branches of the circuit, while in a parallel circuit, the current has only one path to flow through all the components.

• The difference is that in a series circuit, the current has only one path to flow through all the components, while in a parallel circuit, the current has multiple paths to flow through different branches of the circuit.