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[" Two parallel,long wires carry currents "h" and "h" with "],[" > "b" .When the currents are in the same direction.The "],[" magnetic field at a point midway between the wires "],[" is "10" mT.If the direction of "h" is reversed,the field "],[" becomes "30" yt.The ratio "i_(1)/i_(2)" is "]

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Two parallel, long wires carry current i_(1) and i_(2) with i_(1)gti_(2) . When the currents are in the same direction, the magnetic field at a point midway between the wires is 30 muT . If the direction of i_(1) is reversed , the field becomes 90muT . The ratio i_(1)//i_(2) is

Two parallel, long wires carry current i_(1) and i_(2) with i_(1)gti_(2) . When the currents are in the same direction, the magnetic field at a point midway between the wires is 30 muT . If the direction of i_(1) is reversed , the field becomes 90muT . The ratio i_(1)//i_(2) is

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Two parallel, long wires carry currents i_1 and i_2 with i_1gti_2 . When the currents are in the same direction, the magnetic field at a point midway between the wires is 10mu T. If the direction of i_2 is reversed, the field becomes 30mu T . The ration i_1/i_2 is

Two parallel, long wires carry currents i_1 and i_2 with i_1gti_2 . When the currents are in the same direction, the magnetic field at a point midway between the wires is 10mu T. If the direction of i_2 is reversed, the field becomes 30mu T . The ration i_1/i_2 is

Two parallel, long wires carry currents i_1 and i_2 with i_1gti_2 . When the currents are in the same direction, the magnetic field at a point midway between the wires is 10mu T. If the direction of i_2 is reversed, the field becomes 30mu T . The ration i_1/i_2 is

Two parallel long wires carry currents i_(1) and i_(2) with i_(1) gt i_(2) .When the current are in the same direction, the magnetic field at a point midway between the wire is 20muT .If the direction of i_(1) ,is reversed.the field becomes 30muT .The ratio i_(1)//i_(2) is