Variation of current passing through a conductor as the voltage applied across its ends as varied is shown in the adjoining diagram. If the resistance (R) is determined at the points A, B, C and D, we will find that
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a
RC = RD
b
RB > RA
c
RC > RB
d
None of these
answer is D.
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Detailed Solution
From the curve it is clear that slopes at points A, B, C, D have following order A > B > C > D.and also resistance at any point equals to slope of the V-i curve.So order of resistance at three points will be