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  4. The V-I graph for a wire of copper of length L and cross-section area A is shown in the figure below. The slope of the graph will be <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/d19ade12a00707ee205eb9eda2a379ed-.png />

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Q. The $V-I$ graph for a wire of copper of length $L$ and cross-section area $A$ is shown in the figure below. The slope of the graph will be

image

NTA AbhyasNTA Abhyas 2020Current Electricity

Solution:

On doubling the length of wire its resistance is doubled and slope of $V-I$ graph is doubled