8.2 Simple Circuits

Question 1

Allow or Resist
Conductors __________ the flow of electricity.

Answer 1

Allow

Question 2

Allow or Resist
Insulators _________ the flow of electricity.

Answer 2

Resist

Question 3

Electrical current definition:

Answer 3

The movement/flow of electrons around a closed circuit.

Question 4

A current carries energy from the:

Answer 4

Battery to the light bulb

Question 5

A complete circuit must have:

Answer 5

An energy source, a pathway, and a load.

Question 6

Energy source:

Answer 6

Provides continuous charges. eg. battery

Question 7

Pathway:

Answer 7

Charges flow along this and it must be conductive. eg. wires

Question 8

Load:

Answer 8

Converts electrical energy into other forms. eg. lightbulb

Question 9

A closed circuit is:

Answer 9

Complete.

Question 10

A complete circuit can be opened and closed with a:

Answer 10

Switch.

Question 11

Current measures:

Answer 11

The number of charges per second travelling around an electrical circuit.

Question 12

An ammeter measures:

Answer 12

The electrical current in a circuit.

Question 13

For an ammeter to work it has to be:

Answer 13

Connected in the series circuit.

Question 14

Voltage is a measure of:

Answer 14

The electrical energy in a circuit. eg. more volts = more energy = more light from a light bulb.

Question 15

A voltmeter measures:

Answer 15

Voltage

Question 16

For a voltmeter to work it has to be:

Answer 16

Connected in a parallel circuit across from where the voltage is measured. eg. a battery

Question 17

Hose analogy
Voltage is like:

Answer 17

The water pressure of a hose.

Question 18

What is DC?

Answer 18

Direct Current. Electrons flow in one direction only. eg. battery-powered circuits are DC.

Question 19

What is AC?

Answer 19

Alternating Current. Current changes direction 50 times every second. eg. main power in our houses are AC.