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15 cards from this deck
R=VIR = \frac{V}{I}R=IV
Resistance (Ω)
Potential difference (V)
Current (A)
Directly proportional
Systematic error: reading on instrument when value should be zero
Subtract zero error from all readings
Resistance increases
Use low P.D. to keep current low
Only when taking reading; off between readings
Relationship between current and voltage
Straight line (linear)
Ohm's law is obeyed
One direction only
Resistance increases as temperature rises
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