Electricity

Question 1

Static electricity

Answer 1

Is a build up of electric charge that can occur on good insulators eg. Polythene and perspex rods

Question 2

Polythene rod

Answer 2

Gains electrons if a wooden cloth is rubbed on it becomes negatively charged

Question 3

Perspex rod

Answer 3

Loses electrons If it is rubbed by a woolen cloth becomes positively charged

Question 4

Electric current

Answer 4

An electric current is caused by the flow of electrons through a good conductor such as metal

Question 5

Good insulator

Answer 5

A good insulator does not allow electric current to flow

Question 6

Closed circuit

Answer 6

A closed circuit is needed for the current to flow

Question 7

If there is a break in a circuit

Answer 7

If there is a break in the circuit then the current won’t flow and the electrical energy can’t get through

Question 8

Battery

Answer 8

The battery pumps electrons from its negative and around a circuit. The electrons travel all the way around are atracted back to the positive end or the battery

Question 9

Potential difference

Answer 9

The difference of electrical pressure between the positive and negative ends of battery power back is caller potential difference

Question 10

Resistance

Answer 10

Resistance is the optisition to the flow of electrons. The unit is the OHM,and it is measured usinh an Ohmeter

Question 11

Ohms law

Answer 11

Ohms law states that voltage is directly proportional to the current