Unit 2 - Electricity Flashcards
1
Q
Charge flow equation
A
Charge flow = Current x Time
Q = It
2
Q
P.d Equation
A
P.d = Current x Resistance
V = IR
3
Q
Total Resistance Eqaution
A
Total Resistance = Resistance of component 1 + resistance of component 2
Rt = R1 + R2
4
Q
Power Equation
(With P.d)
A
Power = Current x P.d
P = IV
5
Q
Power Equation
(With Resistance)
A
Power = Current^2 x Resistance
6
Q
Energy Transferred Equation
(With Power)
A
Energy Transferred = Power x Time
E = Pt
7
Q
Energy Transferred Equation
(With Charge Flow)
A
Energy Transferred = Charge Flow x Time
E = QV
8
Q
For electrical charge to flow through a closed circuit…
A
The circuit must have a source of potential difference.
9
Q
Units for:
- Charge Flow,
- Current
- Time
A
- C (coulombs)
- A (Amperes)
- s (seconds)
10
Q
A
