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Three copper wires of length and cross-s...

Three copper wires of length and cross-sectional areas are (L,A)`(2L,(A)/(2)),(L//2,2A)`, resistance is

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`R_P = rho(L)/(A), R_Q = (rho(2L))/((A)/(2)) = (4 rho L)/(A) `
` rArr R_R = (rho L )/( 4 A) rArr R_Q = 4 R_P, R_R = (1)/(4) R_P `
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CBSE COMPLEMENTARY MATERIAL-ELECTROSTATICS AND CURRENT ELECTRICITY -NUMERICALS
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