3.5.1.4 - Circuits Flashcards
1
Q
What is the current in a series circuit?
A
The same at all points.
2
Q
R total in a series circuit =
A
R1 + R2 + R…
3
Q
What is the current in a parallel circuit?
A
I = I1 + I2 + I…
4
Q
What is the p.d across components in a parallel circuit?
A
The same.
5
Q
What is R total in parallel circuit =
A
1/ R total = 1 / R1 + 1 / R2 + 1 /R…
6
Q
Power is defined as what?
A
The rate of energy transfer. It is measured in watts, where 1 watt is equal to 1 joule per second.
7
Q
P =
A
P = IV P = Itv P = I^2 R P = V^2 / R
8
Q
What happens to charge as it goes round a circuit?
A
Charge is conserved. It doesn’t get used up or lost.
9
Q
The total current entering a junction =
A
The total current leaving it
10
Q
The total emf around a series circuit =
A
The sum of the p.d.s across each component.
