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Two parallel wires carrying equal currents `i_(1)` and `i_(2)` with `i_(1)gti_(2)`. When the current are in the same direction, the `10 mT`. If the direction of `i_(2)` is reversed, the field becomes `30 mT`. The ratio `i_(1)//i_(2)` is |
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Answer» Correct Answer - 2 `10 mT=(mu_(0))/(2 pi (r//2)) (i_(1)-i_(2))` `30 mT=(mu_(0))/(2 pi(r//2)) (i_(1)+i_(2))` Dividing : (i_(1))//(i_2)=2`. |
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