In the measurement of resistance of a wire using Ohm's law, the...

In the measurement of resistance of a wire using Ohm's law, the plot between

V

and

I

is drawn as shown, then resistance of given wire will be

In the measurement of resistance of a wire using Ohm's law, the plot between V and I is drawn as shown, then resistance

In the measurement of resistance of a wire using Ohm's law, the plot between V and I is drawn as shown, then resistance

Options

A $0.833Ω$
B $0.9Ω$
C $1Ω$
Dnone of these

Correct answer

C. $1Ω$

Step-by-step solution

We know $V ∝ I$ , so $V - I$ curve for a ohmic devices is a straight line passing through origin. Due to some errors/carelessness during experiments, all points may not come on the same line. In this situation, we draw the most appropriate curve.

From given $V - I$ curve,
$⇒ R = \dfrac{2.5}{2.5} = 1Ω$

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