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ntQ) Two parallel long wires carrying current i1 and i2 with i1> 12 . When th currents are in the same direction , then the magnetic field at a point midway b/w the wires is 10 micro T. If the direction of i2 is reversed then the field becomes 30 micro T . THE ratio of currents will ben nta) 4n ntb) 3n ntc)2n ntd) 1n |
| Answer» ntQ) Two parallel long wires carrying current i1 and i2 with i1> 12 . When th currents are in the same direction , then the magnetic field at a point midway b/w the wires is 10 micro T. If the direction of i2 is reversed then the field becomes 30 micro T . THE ratio of currents will ben nta) 4n ntb) 3n ntc)2n ntd) 1n | |