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Two wires, A and B are placed parallel t...

Two wires, A and B are placed parallel to each other in a vertical plane such that A carries 5 A and B carries 2 A of current in W-E direction. If a magnetic compass is placed mid way between A and B such that it is free to rotate in horizontal plane, then in which direction, would it deflect ?
if the direction of current in A and B is reserved, in which direction would it deflect ?

Text Solution

Verified by Experts

(i) Relations between strength of current and magnetic field.
(ii) Use Ampere's right hand rule to find the direction of magnetic field.
(iii) Usually to determine the magnetic meridian we use a magnetic compass and the magnetic needle inside it is fixed in a horizontal plane.
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