An unknown resistor is connected across a cell of potential difference 2V. A current of 200mA is recorded by an ammeter connected in the circuit. Calculate the resistance of the resistor in ohms.
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Current = 200mA = 200 x 10^-3
potential difference = 2V
resistance = ?
Ohm's law is V= IR
R = V/I
R = 2/200 x 10^-3
R = 2/0.2 = 10 ohms
potential difference = 2V
resistance = ?
Ohm's law is V= IR
R = V/I
R = 2/200 x 10^-3
R = 2/0.2 = 10 ohms
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