1.

A metal wire has a dia meter of 0.25 mm and electrical resistivity of 0.8×10(power -8) m (1) what will be the length of this wire to make a resistance f ohm? (2) how much will the resistance change,if the dia meter of wire is doubled?

Answer»

ll be the change in the RESISTANCE of EUREKA wire, when its radius is halved and LENGTH is REDUCED to one-fourth



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