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Anelectriccurrent is passed through a circuit containing two wires of the same material, connected in parallel. Iflengthsand radii of the wires are in the ratio of 4 : 3 and 2 : 3 , then ratio of the currents passing through the wires will be |
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Answer» SOLUTION :we known that `R prop (l)/(r^(2)) rArr (R_(1))/(R_(2))=(l_(1))/(l_(2))xx(r_(2)^(2))/(r_(1)^(2))=(4)/(2)xx(9)/(4)=(3)/(1)` SINCE it is parallel CURRENT, inversely PROPORTIONAL to resistance `V=IR` `R prop (1)/(i), (R_(1))/(R_(2))=(i_(2))/(i_(1))rArr (3)/(1) = (i_(2))/(i_(1))rArr (i_(1))/(i_(2))=(1)/(3)`. |
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