Electricity and Magnetism

Question 1

What is the magnetosphere?

Answer 1

Area surrounding Earth affected by Earth’s magnetic field

Question 2

Resistance

Answer 2

A material’s opposition to the flow of electric current

Question 3

Direct current

Answer 3

Electric current that flows in only one direction

Question 4

Fuse

Answer 4

A safety device with a thin metal strip that will melt if too much current passes through a circuit

Question 5

What is a ferromagnet?

Answer 5

Material that can be magnetized because it contains iron & magnetic domains

Question 6

Resistor

Answer 6

An electrical device that resists the flow of an electrical current

Question 7

Parallel circuit

Answer 7

A circuit that contains more than one path for current flow

Question 8

Voltage

Answer 8

The difference in electrical potential energy between two places in a circuit

Question 9

What is an electron?

Answer 9

Negatively charged particles that orbit around the nucleus of an atom

Question 10

What is a solenoid?

Answer 10

A coil of current carrying wire

Question 11

Insulator

Answer 11

Prevent the movement of electrical charge

Question 12

Alternating current

Answer 12

A flow of electric charge that regularly reverses its direction

Question 13

Ohm’s law

Answer 13

Law that relates current, voltage, & resistance

Question 14

Electric current

Answer 14

Continuous flow of charges through a material

Question 15

What is an electron moment?

Answer 15

Spin of the electron which causes a polar direction

Question 16

Battery

Answer 16

A device that converts chemical energy to electrical energy

Question 17

Magnetic materials

Answer 17

Iron,cobalt, nickel, steel

Question 18

What is a magnet force?

Answer 18

The force a magnet exerts on another magnet or on moving changes

Question 19

Watts

Answer 19

Unit for power used by an electrical device

Question 20

Series circuit

Answer 20

A circuit in which all parts are connected end to end to provide a single path of current

Question 21

Inventor of the light bulb

Answer 21

Thomas Edison

Question 22

Capacitor

Answer 22

An electrical device used to share electrical charge

Question 23

Magnetic field

Answer 23

The area of magnetic force around a magnet

Question 24

What is a magnetic domain?

Answer 24

A region in which many atoms have their magnetic fields aligned

Question 25

Conductor

Answer 25

Allows the movement of electrical charge