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Four very long straight wires carry equa...

Four very long straight wires carry equal electric currents in the `+z` direction. They intersect the xy plane at `(x,y)=(-a,0),(0,a),(a,0),` and `(0,-a)`. The magnetic force exerted on the wire at position `(-a,0)` is along

A

`+y`

B

`-y`

C

`+x`

D

`-x`

Text Solution

Verified by Experts

The correct Answer is:
C

`because" "|vecF_(1)|=|vecF_(2)|`
`therefore` Their resultant will be along `vecF_(3)` i.e.X-axis
So net force on wire sis along `+X` direction
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