A student records three pairs of readings while verifying Ohm’s law for a given…

PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

A student records three pairs of readings while verifying Ohm’s law for a given conductor at room temperature: Reading 1: V1=2.00 V±0.02 VV_1=2.00\,\text{V}\pm0.02\,\text{V}, I1=0.100 A±0.002 AI_1=0.100\,\text{A}\pm0.002\,\text{A} Reading 2: V2=4.01 V±0.02 VV_2=4.01\,\text{V}\pm0.02\,\text{V}, I2=0.200 A±0.002 AI_2=0.200\,\text{A}\pm0.002\,\text{A} Reading 3: V3=5.98 V±0.02 VV_3=5.98\,\text{V}\pm0.02\,\text{V}, I3=0.299 A±0.002 AI_3=0.299\,\text{A}\pm0.002\,\text{A} (a) For each reading, calculate the resistance with its absolute uncertainty, quoting results to an appropriate number of significant figures. (b) Determine the mean resistance of the conductor and the percentage uncertainty in this mean value. (c) On the basis of your results, state whether the conductor obeys Ohm’s law within experimental error and justify your answer.

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