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Part 1: Some Basic Ideas and Components

Current and Resistance

Resistance in a circuit limits the current which can flow.

Current is measured in Amps.

MORE RESISTANCE means LESS CURRENT

To calculate the resistance of a component:

Resistance = Voltage/Current

The unit of resistance is the OHM

LEARN THE RESISTOR COLOUR CODE !!

Test yourself by using an ohm-meter.

Voltage Divider Circuits
Variable Potential Divider Circuit
Variable Potential Divider WITH LOAD
Capacitors (also called condensers)
Diodes
The Transistor

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