P4 equations

Question 1

Potential difference=Current x Resistance equation

Answer 1

V=IxR
Current(amperes)
Potential difference(volts)
resistance(Ohms)

Question 2

Charge=Current x time

Answer 2

Q=IxT
Current(Amps)
Charge flow(Coulombs)
Time taken(seconds)

Question 3

Power=Current x Potential difference equation

Answer 3

P=IxV
Power(watts)
Current(Amps)
Potential difference(Volts)

Question 4

Power=Current x Potential difference

Answer 4

P=IxV
Power supplied(watts)
Current(amperes)
Potential difference(volts)

Question 5

efficiency=
output power/ input power
(x 100%)
Or
output power= 
efficiency x input power

Answer 5

efficiency=
output power/ input power
(x 100%)
Or
output power= 
efficiency x input power

Question 6

Energy=Charge x Potential difference

Answer 6

E=QxV
E=energy transferred(joules)
V=Potential difference(volts)
Q=Charge flow(coulombs)

Question 7

Power=Current2 x Resistance

Answer 7

P=I2xR
power(watts)
Current2(Amperes)
Resistance(Ohms)
2= squares

Question 8

Energy=Power x Time

Answer 8

E=PxT
Energy(Joules)
Power(Watts)
Time(Seconds)