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A WIRE OF RESISTANCE R HAVING A LENGTH L AND AREA OF CROSS SECTION A . WHAT IS THE RESISTANCE OF ANOTHER WIRE OF SAME MATERIAL HAVING A LENGTH 2L AND AREA OF CROSS SECTION 4A? |
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Answer» R is DIRECTLY proportional to length and inversely proportional to area R=rho l/A R1=rho 2l/4A R1=R/2 |
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