Fri May 25, 2012 By: Sanyukta Khetan

The copper wires whose masses are 8gm and 12 gm have lengths in the ratio 3:4. Find the ratio of their resistances.

Expert Reply
Fri May 25, 2012
the resistance of the wire depends on its length, area of cross section & resistivity of material
Resistance of wire is directly proportional to its length.
Resistance of wire does not depend upon its mass.
So resistance ratio will also be 3:4
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