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12 cards from this deck
Current (y-axis), potential difference (x-axis)
Resistance
R=VIR = \frac{V}{I}R=IV
Ohms (Ω)
A resistor where current and potential difference are directly proportional
Straight line through the origin
A resistor whose resistance changes depending on the current
Wire gets hot, metal atoms vibrate, causing more resistance
One direction only
When potential difference reaches threshold voltage
Resistance drops rapidly, current increases rapidly
Remains very high for all potential differences
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