# Physics Unit 2

• Created by: TS21
• Created on: 20-04-15 19:37

## Series and Parallel Circuits

SERIES:

• Only one pathway the current can go
• The total resistance is the sum of all the individual resistors or components
• The total potential difference of the cells is the sum of the individual cells
• The potential difference of the supply is shared between the components
• The current is the same through each component.

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## Series and Parallel Circuits:

PARALLEL CIRCUIT:

• The potential difference across each component is the same
• The current is different in different branches of the circuit
• The total current through the whole circuit is the sum of the current through the separate components.
• The higher the resistance, the lower the current.
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## Resistance, Current and Potential Difference

As you increase the potential difference, the current increases too.

• WHEN TEMPERATURE IS CONSTANT
• ACROSS A FIXED RESISTOR

The graph is directly proportional.

If the battery is flipped, there are negative readings at the voltmeter.

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