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I want help guys please help me. please please please please please please please please please please please please. |
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Answer» <P>Explanation: Let us CONSIDER the ratio as x as of length. So length of 1 wire is x And the second wire is 2x. Let us consider ratio of area as y. So of 1st wire it will be 2y. And of 2ND it will be y. Now we KNOW the formula of resistance as Resistance= Resistivity×Length / Area Solving for 1st wire It will be px/2y where p means Roh or resistivity. And for 2nd wire It will be 2px/y Now the ratio will be px/2y:2px/y In dividing it we get pxy/4pay Where pxy gets cancelled So 1:4 will be the ratio. |
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