Static

Question 1

How do the electrons move in an polythene rod and a cloth

Answer 1

Electrons leave cloth making is positive
Electrons go onto rod making it negative

Question 1

What is Static Electricity

Answer 1

It is the build up of charge on insulating materials

Question 2

How do the electrons move in an acetate rod and a cloth

Answer 2

Electrons leave rod making is positive
Electrons go onto cloth making it negative

Question 3

What is transferred to cause static electricity

Answer 3

electrons

Question 4

What happens when an object keeps gaining negative electrongs

Answer 4

Potential difference can develop between charged thing and earth.
Electrons go to earth causing a spark

Question 5

Object P (Negative) and object Q (positive) are held near to each other so that their electric fields interact with
each other.
State the effect that the electric field of object Q has on object P

Answer 5

Attraction on P from Q

Question 6

How does lightning occur

Answer 6

Charge on ground is positive and charge in cloud is negative
Electrical field builds up between the two
Air is ionised
Electrons travel to the ground
Causing lighting

Question 7

Explain why transferring fuel can be dangerous and how the use of metal wires makes the
process much safer.

Answer 7

Friction as fuel flows through pipe causes a build up of electrostatic charge, (PD between nozzle and plane) which will cause a spark which may lead to a explosion

The use of the metal wire means that there is no PD between the two , so no fields are made and no imbalance of electrons