Topic 2 - Electricity Flashcards
Charge Flow
Charge Flow = Current x Time
Q = IT
Potential Difference
Potential Difference = Current x Resistance
V = IR
Total Resistance
Total resistance =
Resistance of component 1 + Resistance of component 2
Power
1) power= current × potential difference
P = IV
2) power = current^2
× resistance
P = I^2 x R
Energy transferred
1) Energy transferred = Power x Time
E = PT
2) Energy transferred = Charge Flow ×
Potential Difference
E = QV
What does ‘Q’ stand for in a formula?
Charge Flow
What does ‘I’ stand for in a formula?
Current
What does ‘T’ stand for in a formula?
Time
What does ‘V’ stand for in a formula?
Potential Difference
What does ‘R’ stand for in a formula?
Resistance
What does ‘P’ stand for in a formula?
Power
What does ‘E’ stand for in a formula?
Energy transferred
