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Current change and energy, resistance and more resistance (Resistance…
Current change and energy, resistance and more resistance
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Resistance
Definition and formula
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If the resistance is high this means that it is more difficult for electrons to flow around a circuit
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More resistance
Directly proportional
Current through the resistor is directly proportional to the potential difference across the resistor
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Filament lamp
Current passes through, filament lamp gets hot and temperature increases
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Therefore, as potential difference increases, current does not increases as much
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If one variable changes e.g multiples by 2, the other variable also changes by the same multiplier