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Question

Graphs plotted by four students A, B, C and D for the experiment "To study the dependence of current (I) on the potential difference (V) across a resistor" are shown below:




The correct V-I graph is
(1) A
(2) B
(3) C
(4) D

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Solution

Ohm's Law gives us the dependence of current on the potential difference across a resistor. i.e. V=IR or I=1RV. From the given expression, we can say that the graph between I and V is a straight line passing through the origin.

Hence, the correct answer is option 2.

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