Physics

Question 1

What are insulators charged by?

Answer 1

Friction

Question 2

Charging is caused by what?

Answer 2

Losing or gaining electrons

Question 3

What do two of the same charge do?

Answer 3

Repel

Question 4

What do two different charges do?

Answer 4

Attract

Question 5

Role of earthing

Answer 5

Earthing is used to protect you from an electric shock.

Question 6

Alternating current

Answer 6

When the current is constantly changing e.g audio and radio signals

Question 7

Direct current

Answer 7

When the current flows in one direction e.g. car batteries, solar cells

Question 8

Conductor example and definition

Answer 8

Allows electricity to flow through them easily e.g. silver, copper, aluminium, steel

Question 9

Insulator example and definition

Answer 9

Prevents the flow of electricity e.g. rubber, plastic, glass, wood

Question 10

Current formula

Answer 10

Current = Charge/Time

Question 11

The use of voltmeters

Answer 11

Instruments used for measuring electrical current between 2 point in a circuit.

Question 12

The use of ammeters

Answer 12

Instrument for measuring either direct or alternating current.

Question 13

What is voltage measured in?

Answer 13

Volts (V)

Question 14

What is current measured in?

Answer 14

Amperes (A)

Question 15

Resistance formula

Answer 15

Resistance = Voltage/Current