00:01
Okay for this question we describe the similarities and differences between circuits with resistors in series and parallel.
00:08
So looking at the similarities.
00:14
So firstly, voltage is the same in all components.
00:26
Okay, whether it's in series or in parallel, voltage is the same.
00:37
Total current in is equal to the total current out.
00:41
So the current that you put into the circuit will always be the total current out of the circuit.
00:46
For both series and parallel combination.
00:50
And they both follow ohm's law.
00:56
Where for each resistor voltage is equal to ir.
01:03
And it's true for all resistors.
01:08
Okay, differences.
01:13
Okay, so firstly is the resistance total.
01:21
So the total resistance in series is different to that of that in parallel.
01:26
So in series, okay, it's r1 plus r2 plus r3.
01:32
So you just add them together.
01:35
In parallel, it's 1 over r1 plus 1 over r2...