Nichrome and copper wires of same length and same radius are connected in series. Current is `I` passed through them. Which up more ? Justify your answer.
Text Solution
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In series combination current `I` is same in nichrome and copper wires. Heat produced, `H = I^(2)R t = I^(2) rho l/A t or H prop rho` (as `I, l, A, t` are constant). Then `H_(Nich)/H_(Cu) = rho_(Nich)/rho_(Cu) gt 1` (`:' rho_(Nich) gt rho_(Cu)`) So `H_(Nich) gt H_(Cu)` Thus nichrome wire will produce more heat.
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