Unit 2: Electricity Flashcards
1
Q
Equation for charge
A
Charge flow = current x time
Q = I t
2
Q
Equation for potential difference
A
Potential difference = current x resistance
V = I R
3
Q
Equation for total resistance
A
Total resistance = resistance of component 1 +
resistance of component 2
Rt = R1+R2
4
Q
Equations for power (watts)
A
Power = current x potential difference
P = I V
Power = (current)^2 x resistance
P = I^2 R
5
Q
Equations for energy transferred
A
Energy transferred = power x time
E = P t
Energy transferred = charge flow x potential difference
E = Q V
