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The ratio of length of two wires of same mass arc made up of same material is 1 : 2 Therefore ratio of their resistance is ........ |
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Answer» `1: 1` `R = (rho L)/(A)= (rho l^(2))/(V) = (rho l^(2) d)/(m)` ` "(DENSITY" d = (m)/(V)rArr V = (m)/(d) ` `R PROP l^(2) ` (other terms are EQUAL. `therefore (R_(1))/(R_(2)) = ((l_(1))/(l_(2)))^(2) = ((1)/(2))^(2)= (1)/(4) ` |
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