Circuit Explorers

What happens to the brightness of the bulbs in a series circuit if you add more bulbs?

• The bulbs get brighter.

• The bulbs stay the same brightness.

• The bulbs get dimmer.

• The bulbs turn off.

In a parallel circuit, if one bulb burns out, what happens to the other bulbs?

• All the bulbs go out.

• The other bulbs stay lit.

• The other bulbs get brighter.

• The other bulbs get dimmer.

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

• To increase the current.

• To decrease the resistance.

• To open or close the circuit.

• To change the direction of electricity.

Which of the following is NOT a component of a basic electrical circuit?

• Battery

• Light bulb

• Wire

• Water pipe

What is the unit of electric current?

• Volt

• Watt

• Ampere

• Ohm

What does an open circuit mean?

• The circuit is turned on.

• The circuit is complete and current can flow.

• There is a break in the circuit and current cannot flow.

• The circuit is overloaded with electricity.

Which of the following materials is a good conductor of electricity?

• Plastic

• Wood

• Copper

• Glass

In a series circuit with three resistors, if one resistor is removed, what happens to the current?

• It stops completely.

• It increases.

• It decreases.

• It remains the same.

What is the purpose of a resistor in a circuit?

• To store electric charge.

• To control the flow of electric current.

• To convert electricity into light.

• To close the circuit.

If two identical bulbs are connected in series, how does the voltage across each bulb compare to the voltage of the battery?

• Each bulb has the same voltage as the battery.

• Each bulb has half the voltage of the battery.

• Each bulb has more voltage than the battery.

• The voltage across each bulb cannot be determined.