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Two wires of equal length, of copper and...

Two wires of equal length, of copper and manganin, have the same resistance. Which wire is thicker?

Text Solution

Verified by Experts

`R = (rho A)/(l) implies A = (R l)/(rho)`
Since `rho_(cu) lt rho_("manganin")` copper wire is thicker than manganin wire.
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