The variation of current (i) passing through | vedclass

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(D) According to Ohm's Law,$V = iR$,which implies $R = V/i$.In the given $V-i$ graph,the resistance $(R)$ at any point is equal to the slope of the ta

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None of these

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(D) According to Ohm's Law,$V = iR$,which implies $R = V/i$.In the given $V-i$ graph,the resistance $(R)$ at any point is equal to the slope of the tangent at that point,which is given by $	an 	heta = \frac{dV}{di}$.As we move from point $A$ to $D$ along the curve,the angle $	heta$ that the tangent makes with the current axis $(i)$ decreases.Since the slope of the curve decreases as we move from $A$ to $D$,the resistance at these points follows the order $R_A > R_B > R_C > R_D$.Comparing this with the given options:$A)$ $R_C = R_D$ is incorrect.$B)$ $R_B > R_A$ is incorrect as $R_A > R_B$.$C)$ $R_C > R_B$ is incorrect as $R_B > R_C$.Therefore,the correct option is $D$.

The variation of current $(i)$ passing through a conductor as the voltage $(V)$ applied across its ends is 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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