Electricity: equations (P2) Flashcards
hello
1
Q
what is charge
charge measured in coulombs.
A
current x time
current is measured in amps
2
Q
what is potential difference
p.d is volts
A
current x resistance
current is amps
resistance is ohms
3
Q
what is power
with p.d
power is watts
A
current x potential difference
p.d is volts
current is amps
4
Q
what is power
with (current)2
powers is watts
A
(current)2 x resistance
currents is amps
resistance is ohms
5
Q
what is energy transferred
with power
energy is joules
A
power x time
power is watts
time is seconds
6
Q
what is energy transferred
with charge
energy is joules
A
charge x potenial difference
charge is coulombs
p.d is volts
