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Current Electricity — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
Question
Which of these relation holds good for an Ohmic conductor?
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Answer

  1. The straight-line V-I graph pass through the origin.
Explanation:
The conductors which obey Ohm’s law are called Ohmic conductors. The linear relationship between voltage and current for these conductors hold good. The resistance $(\text{R}=\frac{\text{V}}{\text{I}})$is independent of the current through the conductor. The magnitude of current changes linearly with voltage. Hence the V-I graph for ohmic conductors is a straight line passing through the origin.

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