End of Year Exam

Question 1

Define- electrical conductor

Answer 1

Substance that will allow charge to flow easily. It has a low electrical resistance

Question 2

Define- electrical insulator

Answer 2

Substance that will not let electrical charge flow easily. It has a high electrical resistance

Question 3

Define- circuit component

Answer 3

Part of a circuit with a particular symbol e.g bulb, switch, cell

Question 4

Define- series circuit

Answer 4

Circuit where current flows through all the components in one pathway

Question 5

Define- parallel circuit

Answer 5

Circuit where current flows through more than one pathway through components

Question 6

Define- fuse

Answer 6

A thin piece of wire that will melt when the current increases above a certain level. It is a safety component in a circuit.

Question 7

Define- circuit breaker

Answer 7

An automatic switch that stops the flow of electric current in a suddenly overloaded electric circuit.

Question 8

Define- current

Answer 8

The rate of flow of electrical charge

Question 9

What is the symbol for current?

Answer 9

(I)

Question 10

What is current measured in?

Answer 10

Amps (A)

Question 11

Define- voltage

Answer 11

The electrical potential energy per coulomb