# Electronics and waves

Waves Revision cards

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• Created by: mitchellg
• Created on: 26-02-14 10:32
Voltage and Current in Series
• Voltage is shared and current is constant
1 of 7
Voltage and Current in Parallel
• Current is shared and voltage is constant
2 of 7
Kirchhoff’s Second Law
• The sum of the e.m.f round a loop is equal to the sum of the p.d round the same loop
3 of 7
Kirchhoff’s Second Law
E emf = E P.d
4 of 7
Kirchhoff’s Second Law
• This is a consequence of the conservation of energy; since energy cannot be created or destroyed, it must be used in the circuit
5 of 7
Internal Resistance
• All sources of e.m.f have internal resistance
6 of 7
Internal Resistance
• In a battery, this is due to the chemicals inside of it, in a power supply it is due to the components and wires inside
7 of 7

## Other cards in this set

### Card 2

#### Front

• Current is shared and voltage is constant

#### Back

Voltage and Current in Parallel

### Card 3

#### Front

• The sum of the e.m.f round a loop is equal to the sum of the p.d round the same loop

E emf = E P.d

### Card 5

#### Front

• This is a consequence of the conservation of energy; since energy cannot be created or destroyed, it must be used in the circuit