P4 Physics pg 106
- Created by: Abigail Swann
- Created on: 17-04-13 19:28
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- Potential dividers
- The higher the resistance, the greater the voltage drop
- the larger the share of the total resistance, the larger the share of the total voltage
- If the resistances are equal, each resistor takes half the voltage
- The output voltage can be varied by changing one/both of the resistors for a variable resistor
- Allow you to use a device that needs a certain voltage from a battery of a different voltage
- The output voltage depends on the values of r1 and r2
- Potential dividers are useful
- Consists of a pair of resistors, they divide potential in a circuit
- this means you get outputs of different voltages
- The higher the resistance, the greater the voltage drop
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