Electricity

Question 1

Static electricity

Answer 1

A stationary electric charge typically caused by friction which cause sparking or cracking or the attraction of dust or hair

Question 2

Examples

Answer 2

Rubbing pen on jumper to make stream of water move

Van de graaff generator to make hair stick up

Question 3

Negatively charged

Answer 3

Objects gain electrons

Question 4

Positively charged

Answer 4

Objects lose electrons

Question 5

Like charges

Answer 5

Repel each other

Question 6

Opposite charges

Answer 6

Are attracted to each other

Question 7

Insulator

Answer 7

Charge does not travel through e.g. Plastic

Question 8

Conductor

Answer 8

Charge can travel through e.g. metal

Question 9

polythene

Answer 9

Gains electrons

Question 10

Perspex

Answer 10

Loses electrons

Question 11

Earthing

Answer 11

Object loses its charge to the earth through a conductor

Question 12

Electric current

Answer 12

Caused by the flow of electrons through a good conductor e.g metal

Question 13

Electrical energy can be converted into

Answer 13

Light -Light Energy so we can see in the dark

Heat -Heat energy so we can cook + heat buildings

Kinetic-Kinetic Energy for electric motors

Sound-Sound Energy for music.

Question 14

Bulbs in series

Answer 14

The same amount of current flows through each bulb in the series

Question 15

Bulbs in parallel

Answer 15

Current is split between the bulbs, if they are the same size the current is split evenly
Same voltage flows through each bulb
The lights in my house are parallel

Question 16

Which r brighter

Answer 16

Bulbs in parallel r brighter then in series