Two parallel long wire carry currents i_(1) and i_(2) with i_(1) gt i_(2) . When the currents are in the same direction , the magnetic field midway between the wires is 10 muT . When the direction of i_(2) is reversed, it becomes 40 muT . The ratio i_(1)//i_(2) is

Two parallel long wire carry currents i_(1) and i_(2) with i_(1) gt i_

1.	Two parallel long wire carry currents i_(1) and i_(2) with i_(1) gt i_(2) . When the currents are in the same direction , the magnetic field midway between the wires is 10 muT . When the direction of i_(2) is reversed, it becomes 40 muT . The ratio i_(1)//i_(2) is
Answer» `3:4` `11:7` `7:11` `5:3` ANSWER :D

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Two parallel long wire carry currents i_(1) and i_(2) with i_(1) gt i_(2) . When the currents are in the same direction , the magnetic field midway between the wires is 10 muT . When the direction of i_(2) is reversed, it becomes 40 muT . The ratio i_(1)//i_(2) is

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