Resistance and V = I X R
Voltage-Current graphs show how the current varies as you change the potential difference (voltage).
1) Different Resistors - The current through a resistor (at a constant temperature) is directly proportional to P.D. Different resistors have different resistances.
2) Filament Lamp - As the temperture of the filament increases, the resistance increases.
3) Diode - Current will only flow through a diode in one direction. The diode has a very high resistance in the opposite diode.
Resistance Increases with Temperature
- When an electrical charge flows through a resistor…