102b.09 - Principles of Electricity

Question 1

Light, heat, chemical and magnetic changes are all produced by:

Answer 1

Electricity

Question 2

Most of the electricity you use daily consists of a flow of tiny, negatively charged particles called:

Answer 2

Electrons

Question 3

The movement of electricity along a path called a conductor is a(n):

Answer 3

Electric current

Question 4

Materials that best transport electricity are called:

Answer 4

Conductors

Question 5

Which of the following materials does NOT allow a current to pass through it?

Answer 5

Alcohol

Question 6

An ampere is a unit of electric:

Answer 6

Strength

Question 7

A volt is a unit of electric:

Answer 7

Pressure

Question 8

A measure of how much electrical energy is being used is known as a:

Answer 8

Watt

Question 9

A current in which electrons move at an even rate and flow in only one direction is called:

Answer 9

Direct current

Question 10

When a blow dryer is on and air begins to flow, you have an example of a(n):

Answer 10

Closed circuit

Question 11

When too many appliances are put on one circuit and are operated at the same time, more current flows than the line is designed to carry. This is known as:

Answer 11

Overload

Question 12

Fires in electrical circuits can occur if:

Answer 12

too many appliances use the same wall socket and overload the circuit

Question 13

Dropping an electrical appliance into water, making it a foreign conductor, causes a(n):

Answer 13

Short circuit

Question 14

Which of the following devices breaks the flow of current when an overload occurs?

Answer 14

Circuit breaker

Question 15

Which of the following actions should NOT be taken if a fire results from an overload of an electric circuit?

Answer 15

Put water on it