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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A cylindrical conductor has length l and area of cross section A. Its conductivity changes with distance (x) from one of its ends as σ=σ0lx.[σ0is a constant]. Calculate electric field inside the conductor as a function of x, when a cell of emf V is connected across the ends.

A cylindrical conductor has length l and area of cross section A. Its conductivity changes with distance (x) from one of its ends as σ=σ0lx.[σ0is a constant]. Calculate electric field inside the conductor as a function of x, when a cell of emf V is connected across the ends.

A wire of mass m length I and area of cross section A is stretched in such a way that is length increases by 10% of its original value density d Express the changed resistance in percentage.