electrical power and fuses

Question 1

what is power?

Answer 1

the rate of energy transfer

Question 2

what does power depend on?

Answer 2

the voltage and the current

Question 3

what is the formula for power?

Answer 3

p=iv

Question 4

what is power measured in?

Answer 4

watts

Question 5

what is a fuse?

Answer 5

a safety device that is designed to cut off the flow of electricity to break the circuit of an appliance if the current becomes too large, due to a fault/ surge

Question 6

if the current in the wire becomes too large what happens to the fuse?

Answer 6

it heats up and melts and it breaks which breaks the circuit in the appliance making it safe to touch and reducing the damage

Question 7

fuses come in what 3 sizes?

Answer 7

3 amps, 5 amps and 13 amps

Question 8

what does energy transferred depend upon?

Answer 8

current and potential difference and time

Question 9

what is the formula for energy transferred?

Answer 9

E= PxT

Question 10

energy can also be calculated using what formula?

Answer 10

E= I x V x T