Electricity and Magnetism Test Review

The strength of magnetic force in an electromagnet is ______ by increasing the current through the coil.

• increased

• decreased

• unaffected

• eliminated

Tags

NGSS.MS-PS2-3

Which of the following statements correctly identifies both devices illustrated in the pictures?

• Picture A shows an electric generator, while Picture B shows an electromagnet.

• Picture A shows an electromagnet, while Picture B shows an electric motor.

• Picture A shows an electric motor, while Picture B shows an electromagnet.

• Picture A shows an electric generator, while Picture B shows an electric motor.

Tags

NGSS.MS-PS2-3

What type of current is produced by a battery?

• parallel current

• alternating current

• direct current

• potential current

Look at the electric circuit above:

• The circuit is closed.

• It doesn't include a load.

• The circuit is open.

• It does not include an electrical source.

What is electric current?

• A flow of electric charges.

• static electricity.

• two objects repelling from each other.

• batteries.

What is the device seen here?

• generator
• electric motor
• electromagnet
• magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The statement, current is equal to the voltage difference divided by the resistance, is known as _________.

• Einstein’s equation

• Ohm’s law

• Newton's Law

• Faraday's Law

A static discharge differs from an electric current in that a static discharge ______.

• it flows of electrons

• last for only a fraction of a second

• results because a force is exerted on the electrons

• involves the movement of ions as well as electrons

Electric charge that has accumulated on an object is referred to as ______.

• current electricity

• static electricity

• circuit electricity

• current circuit

Resistance is measured in a unit called the ______.

• Ampere

• volt

• coulomb

• ohm