Flashcards: Electricity and Magnetism Test Honors

Front

Which of the following statements about electric charge is true?

Back

Electrical forces act at a distance.

Front

What could be used as an insulator? Options: plastic plate, silver spoon, copper wire, gold necklace.

Back

plastic plate

Front

What will increase the resistance of a wire?

Back

Increasing the temperature of the wire.

Front

Current produced by a 9-volt battery through 0.2 ohms resistance?

Back

45 amps

Front

Which two areas of physical science are closely related to the development of electric motors and generators?

Back

electricity and magnetism

Front

What decreases the strength of the magnetic field around a wire? Options: increasing the current, using less loops around the iron core, flipping the direction of the current, using a larger iron core.

Back

using less loops around the iron core

Front

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps?

Back

1.98 V

Front

This contains a piece of metal that melts if it gets too hot in order to open a circuit.

Back

fuse

Front

What does the symbol labeled #1 represent?

Back

battery

Front

What does the symbol labeled #2 represent?

Back

light