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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

Options

  1. A0.833 Ω
  2. B0.9 Ω
  3. C1 Ω
  4. Dnone of these

Correct answer

C. 1 Ω

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 = 2.5 2.5 = 1 Ω

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