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Two straight infinitely long wires are …

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Two straight infinitely long wires are fixed in space so that the current in the left wire is 2 A and directed out of the plane of the page and the current in the right wire is 3 A and directed into the plane of the page. In which region(s) is/are there a point on the x-axis, at which the magnetic field is equal to zero due to these currents carrying wires? Justify your answer.

Posted by Alok Pathak 4 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Arpit Singh Dangi 4 years, 6 months ago

In region-I: Magnetic field due to 2A and 3A current wire is in opposite direction. In region-II:- Here, also magnetic field due to 2A and 3A currents wire is in opposite direction. But, it is highly probable, in region I, that we can have neutral points, because B1 = 2μo2πR12μo2πR1 ; B2 = 3μo2πR23μo2πR2 for region I, R2 > R1 and I2(3A) > I1(2A) and B1 and B2 are in opposite directions, so net magnetic intensity will become zero at existing neutral point.(highly probable).Read more on Sarthaks.com - https://www.sarthaks.com/968837/two-straight-infinitely-long-wires-are-fixed-in-space-so-that-the-current-in-the-left-wire-is

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