Physical Science, Chapter 7

A device that uses an electromagnet to measure electric current is called:

Which is NOT part of a generator?

Group of atoms in a mag mat. in which the mag poles of the atoms are aligned in the same dir.:

Which of the following will NOT attract to a magnet?

Region on a magnet where the magnetic force exerted by a magnet is strongest:

What happens to the magnetic force as the distance between two magnetic poles decreases?

What surrounds an electric charge and exerts a force on other electric charges?

What word is related to the force that causes electric charges to flow; measured in volts (V)?

Large wheel that rotates when pushed by steam, wind, or water & provides mech. energy to a gen.

A temporary magnet created when there is a current in a wire coil is called:

Atoms at the north pole of a magnet have:

Electric current that reverses its direction of flow in a regular pattern is called:

The Earth is like a giant:

A cylindrical coil of wire, produces a mag field when an elec. current passes through the wire:

What device uses Earth's magnetic field to indicate which way is north?

What is the interaction between electric charges and magnets called?

Device that uses electromagnetic induction to increase or decrease the voltage of an AC:

The properties and interactions of magnets are called:

Region surrounding a magnet that exerts a force on other mags & objects made of mag materials:

The attractive or repulsive force between electric charges and magnets is called:

What do magnetic poles that are alike do?

Which describes the direction of the electric current in AC?

Opposite ends of magnetic poles do this.

Which of the following will a magnet attract to?

Device that uses electromagnetic induction to convert mechanical energy to electrical energy: