Topic 8 Energy Transfer in Electrical Systems

Question 1

The presence and flow ofelectric charges.

Answer 1

Electricity

Question 2

Flow of electric charge in a circuit.

Answer 2

Current

Question 3

Cells that are connected together.

Answer 3

Battery

Question 4

Provide a convenient way of controlling electrical energy systems.

Answer 4

Switches

Question 5

Materials that resist the flow of charge. They cause energy to be lost as heat.

Answer 5

Resistors

Question 6

Low resistance parallel path.

Answer 6

Short circuit

Question 7

List three effects of an electric current:

Answer 7

Heats a conductor, causes a magnetic field, decomposes certain substances (electrolysis)

Question 8

Resistance wire inside a light bulb that glows to produce light.

Answer 8

Filament

Question 9

Solution with positively and negatively charged particles.

Answer 9

Ionic solution

Question 10

Electrical conductor used to make contact with a non-metallic part of a circuit.

Answer 10

Electrode

Question 11

A device used to protect components of a circuit.

Answer 11

Fuse

Question 12

The regions of force surrounding a permanent magnet or a moving charged particle.

Answer 12

Magnetic field

Question 13

Negatively charged sub-atomic particles.

Answer 13

Electrons

Question 14

Materials through which electrons can flow.

Answer 14

Conducting wires

Question 15

A chemical system that stores electrical potential energy.

Answer 15

Cell