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In Ohm's law experiment, the reading of voltmeter across the resistor is $12.8 V$ and current through resistor is $0.30 A$ . Find the resistance of resistor.

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$42.667 Ω$

$42.67 Ω$

$42.3 Ω$

$43 Ω$

answer is D.

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Detailed Solution

According to Ohm's law,

$V = I R \Rightarrow R = \frac{V}{l} = \frac{12.8}{0.30} = 42.667 Ω = 43 Ω$

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