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26/09/2021 6:16 pm
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When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
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26/09/2021 6:17 pm
Given: V = 12 volts, I = 2.5 mA = 2.5 x 10-3 A
Resistance, R = ?
∴ Resistance = \(\frac{V}{I}\) = \(\frac{12}{2.5 \times 10^{-3}}\)
= 4.8 x 103 Ω