Electric Circuit Quiz

What is an electric circuit?

• A path for air flow

• A loop for water movement

• A closed loop that allows electric current to flow

• A magnetic path

Which of the following are the basic components of a simple circuit?

• Resistor, transistor, diode

• Battery, motor, antenna

• Power source, wires, load

• Switch, plug, router

What is the unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

What does a resistor do in a circuit?

• Stores energy

• Converts energy

• Increases current

• Limits or controls current

Which formula represents Ohm's Law?

• V = IR

• V = I + R

• V = R/I

• V = I - R

What is the unit of resistance?

• Watt

• Volt

• Amp

• Ohm (Ω)

In a series circuit, how does the current flow through the components?

• Differently in each branch

• Backward

• The same through all components

• Depends on the voltage

What happens to the voltage across each branch in a parallel circuit?

• It's different for each branch

• It's zero

• It's the same for all branches

• It increases with resistance

What is a short circuit?

• A circuit with high resistance

• A loop with a switch

• A fault allowing current through a low-resistance path

• A safety device in electronics

What protects circuits from excessive current?

• Capacitor

• Transistor

• Switch

• Fuse or circuit breaker