Understanding Circuits Quiz

What is the flow of electricity in a circuit called?

• Resistance

• Current

• Voltage

• Power

In a simple circuit diagram, what symbol is typically used to represent a battery?

• A pair of parallel lines with one line longer than the other

• A zigzag line

• A circle with a plus sign inside

• A square

What does a closed circuit mean?

• The circuit is broken and electricity cannot flow.

• The circuit is complete and electricity can flow.

• The circuit has a short circuit.

• The circuit is not connected to any power source.

Which of the following is NOT a good conductor of electricity?

• Copper

• Aluminum

• Rubber

• Gold

What is the purpose of a resistor in a circuit?

• To increase the flow of electricity

• To decrease the flow of electricity

• To store electricity

• To convert electricity into light

What happens when you add more batteries to a circuit?

• The resistance increases

• The current decreases

• The voltage increases

• Nothing changes

In a circuit diagram, what does a straight line connected to a circle represent?

• A battery

• A light bulb

• A resistor

• A switch

What is required for a circuit to work?

• Only a power source

• Only a conductor

• A power source, a conductor, and a load

• Only a load

What does an open switch do in a circuit?

• It completes the circuit.

• It breaks the circuit.

• It increases the resistance.

• It decreases the resistance.

Which of the following is true about parallel circuits compared to series circuits?

• In parallel circuits, all components share the same voltage.

• In parallel circuits, each component has its own path to the power source.

• In series circuits, if one component fails, the others can still work.

• In series circuits, the voltage is divided equally among all components.