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Two long, straight wires a and b are 2*0...

Two long, straight wires a and b are `2*0` m apart, perpendicular to the plane of the paper as shown in figure . The wire a carries a current of `9*6 A` directed into the plane of the figure,The magnetic field at the point P at a distance of 10/11 m from the wire b is zero.
Find (a) the magnitude and direction of the current in b,
(b) the magnitude of the magnetic field B at the point s
(c) the force per unit length on the wire b`.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
(i) The magnetic field at `P` due to current in wire `A`.
`B_(A) = (mu_(0))/(4 pi) (2I_(A))/(r_(AP)) = mu_(0)/(4 pi)xx(2xx9.6)/((2+ (10)/(11)) ` ( Direction `P to M`) ….(i) `
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