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When a potential difference of $3.0$ volts is maintained across a nichrome wire, a current of
$0.75$ ampere flows through the wire. Which of the following will be the resistance of the nichrome wire?

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2.0 Ω

4.0 Ω

4.0 Ω

None of these

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Detailed Solution

When a potential difference of

3.0

volts is maintained across a nichrome wire, a current of

0.75

ampere flows through the wire, then the resistance of the nichrome wire will be

4.0 Ω .

Given, Voltage,

V = 3.0

and current, I

= 0.75 A

Resistance of the given nichrome wire, R

= \frac{V}{I}

Putting the value of voltage and current in above equation, we get R

= \frac{3.0 V}{0.75 A}

= 4.0 Ω .

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