Physics Final

Front

A material through which electrons do NOT flow easily is a(n) _____. Options: insulator, fuse, conductor, circuit breaker

Back

insulator

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? Options: using a thicker/wider wire, using a shorter wire, increasing the temperature of the wire, using silver instead of copper.

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 will decrease the strength of the magnetic field around a wire? Options: increasing the current flowing through the wire, using less loops around the iron core, flipping the direction of the current flowing through the wire, 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

The function of a generator is to change ____.

Back

mechanical energy to electrical energy

Front

This exerts a force that causes other electric charges to move.

Back

electrical fields

Front

What process is the method by which a neutral object obtains an electrical charge from a distance?

Back

induction