Ch. 20.3 - Electric Circuits

Ch. 20.3

Electric Circuits

Fill in the Blank

Circuit diagrams use ________ to represents parts of a circuit, including the source of electrical energy and devices that are run by the electrical energy.

Multiple Choice

What does the following symbol represent in a circuit diagram?

• a switch

• a battery

• a lightbulb

• a voltmeter

Multiple Choice

What does the following symbol represent in a circuit diagram?

• a switch

• a battery

• a lightbulb

• a voltmeter

Multiple Choice

What does the following symbol represent in a circuit diagram?

• a switch

• a battery

• a lightbulb

• a voltmeter

Multiple Choice

True or False? In a series circuit, if one element stops functioning, then none of the elements can operate.

• True

• False

Open Ended

Explain why the bulbs shine less brightly when more bulbs are added to a series circuit.

Multiple Choice

True or False? Circuits in a home are rarely wired in parallel.

• True

• False

Multiple Choice

True or False? If one element stops functioning in a parallel circuit, the rest of the elements stop functioning.

• True

• False

Fill in the Blank

The rate at which electrical energy is converted into another form of energy is called ________.

Fill in the Blank

The SI unit of electrical power is the ________ which is abbreviated with a W.

Multiple Choice

True or False? Electric power is calculated by multiplying current times voltage.

• True

• False

Multiple Select

Select each answer that could happen if the current in a wire exceeds the circuit's safety limit.

• The wire could overheat

• The wire could get cooler

• A fire could start

• A fuse could blow

Open Ended

Explain how a fuse prevents current overload in a circuit.

Fill in the Blank

A switch that opens to prevent overloads when current in a circuit is too high is called a circuit ____________.