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Two parallel conductors A and B separated by 5 cm carry electric current of 6A and 2A in the same direction. Find the point between A and B where the field is zero. |
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Answer» Solution :When the field is zero `B_(1) = B_(2) : therefore (mu_0i_1)/(2PIX) = (mu_0i_2)/(2pi(d-x))` where .d. is the DISTANCE between them `therefore(i_1)/(x) = (i_2)/(d-x)` `(6)/(x) = (2)/(5x-x) rArr 3(5-x) = x or 4X = 15` ` x= 3.75` cm `therefore` Field is zero at a distance of 3.65 cm from A |
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