Circuit Design

Fill in the word that completes the sentence.

Current can flow through an electric circuit only when the switch is _______.

• Open

• Closed

How does the resistance change as you add bulbs to a series circuit?

• The resistance does not change.

• The resistance decreases.

• The resistance increases.

What are the advantages of parallel circuits? Check all that apply.

• If one bulb goes out, the other bulbs go out.

• If one bulb goes out, the other bulbs stay lit.

• If there is a break in one branch of the circuit, current can still flow through the other branches.

• If there is a break in one branch of the circuit, current cannot flow at all.

• Parallel circuits are complicated to design and build.

Which components do all circuits have in common? Select three options.

• energy source

• voltmeter

• wires

• ammeter

• device that needs electrical energy

Any device that uses current is a

• switch.

• voltmeter.

• battery.

• resistor.

In a circuit diagram, what does this symbol represent?

• a resistor

• a light bulb

• a battery

• a switch

Use the drop-down menus to identify the parts of the diagram labeled A, B, C, and D.

What is Label 3 ?

• light bulb

• switch

• battery

• resistor

Current cannot flow through a circuit when the switch is ___________.

Current flows through a circuit and all of the bulbs are lit only when the switch is

Which circuit is a parallel circuit?

• Circuit A

• circuit B