Current Electricity

Question 1

Current

Answer 1

Movement of electrons

Question 2

What is current measured in

Answer 2

Amps

Question 3

What is the symbol for current

Answer 3

I

Question 4

What is current measured using

Answer 4

An ammeter

Question 5

Voltage

Answer 5

Is the measure of the force that a power supply has to drive a current

Question 6

Voltage is measured in

Answer 6

Volts

Question 7

The symbol for voltage is

Answer 7

V

Question 8

Voltage is measured using a

Answer 8

voltameter

Question 9

Resistance

Answer 9

Is the ability of a substance to reduce current

Question 10

Resistance is measured in

Answer 10

Ohms

Question 11

The symbol for resistance is

Answer 11

R

Question 12

Resistance is measured using a

Answer 12

Ohmmeter

Question 13

Ohms law

Answer 13

VIR

Question 14

Direct current

Answer 14

Pushes currents in one direction only e.g. Battery

Question 15

Alternating current

Answer 15

Currents which is constantly changing direction (changes 100 times every second)

Question 16

Bulbs in series

Answer 16

If you remove one bulb the other gulf will not light

Question 17

Bulbs in parallel

Answer 17

If yo remove one bulb the other bulb will stay lighting

Question 18

Straight line graphs

Answer 18

Shows that the voltage is directly proportional to the current

Question 19

What are the 3 effects of electricity

Answer 19

1. ) Heating effect
2. ) Chemical effect
3. ) Magnetic effect of electricity

Question 20

What is the everyday use of the chemical effect of electricity

Answer 20

Electromagnet

Question 21

What is the unit of electricity

Answer 21

Kilowatt-hour

Question 22

What is the kilowatt-hour

Answer 22

Is the energy used when 1 kilowatt of power I’d used for 1 hour.

Question 23

How do you work out the kilowatt- hrs?

Answer 23

No. of kilowatts multiplied by the total no. = kilowatt hours

Question 24

How do you find the cost of using electrical appliances

Answer 24

Cost= no. of kilowatts multiplied cost per unit