Question

44. When a 12V battery is connected across an unknown resistor there is a current of 6A in the circuit. The value of resistance of the resistor a) 8Ω b) 4Ω c) 10Ω d) 2Ω​

Answer 1

Explanation:

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Answer 2

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$Given: V=12 V \\ I=6mA \\ \\ \\ Let \: the \: resistance \: be \:  R \\ \\ By \: \: Ohm's \: Law,\\ \\V=IR \\ \\ 12=6× {10}^{ - 3} \times 10 \\ \\ = 60 \times {10}^{ - 4} \\ \\ R= \frac{v}{i} \\ \\ = \frac{12}{60} \times {10}^{ - 4} \\ \\ = \frac{12 \times {10}^{4}}{60} \\ \\ = \frac{12 \times 10000}{60} \\ \\ = \frac{120000}{60} = 2000 \\ \\ = 2Ω$

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Option d =2Ω

is correct