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a rod of length l and cross sectional area a lies along the x - axis between x = l and x = 2l. resistivity of rod varies according to law p = pnot(x/l). if the rod is subjected to potential difference v0, then current in the rod is

Answer» a rod of length l and cross sectional area a lies along the x - axis between x = l and x = 2l. resistivity of rod varies according to law p = pnot(x/l). if the rod is subjected to potential difference v0, then current in the rod is


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