P5.3/P5.4/P5/5 - Power/charge/efficiency

Question 1

equation of power/energy/time

Answer 1

power = energy/time

Question 2

power

Answer 2

energy transferred per second by an electric current

Question 3

equation of power/current/pd

Answer 3

power = current x pd

Question 4

unit of power

Answer 4

watts

Question 5

correct rating of fuse

Answer 5

power/voltage

Question 6

domestic appliances fuse fitting

Answer 6

-3A
-5A
-13A

Question 7

equation of voltage/current/resistance

Answer 7

v = I x R

Question 8

equation of power/current/resistance

Answer 8

power = current2 x resistance

Question 9

equation of charge flow/current/time

Answer 9

-charge = current x time

Question 10

equation of energy transferred from mains

Answer 10

power x time

Question 11

equation of efficiency

Answer 11

output power/input power x 100