ABCD is a square loop made of an uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is

Question

ABCD is a square loop made of an uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is (A) Zero at all points outside the loop (B) Zero at all points inside the loop (C) Zero only at the centre of the loop (D) Maximum at the centre of the loop.

Tardigrade Admin · Accepted Answer

B at centre due to a straight conductor = (μ0/4π)1 (sin α + sin β) Net B at centre comes out to be zero

Q. ABCD is a square loop made of an uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is

Zero at all points outside the loop

Zero at all points inside the loop

Zero only at the centre of the loop

Maximum at the centre of the loop.

B at centre due to a straight conductor = $\frac{μ _{0}}{4 π}$ 1 (sin $α$ + sin $β$ )
Net B at centre comes out to be zero

Q. ABCD is a square loop made of an uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is

Zero at all points outside the loop

Zero at all points inside the loop

Zero only at the centre of the loop

Maximum at the centre of the loop.

B at centre due to a straight conductor = 4πμ0​​1 (sin α + sin β) Net B at centre comes out to be zero

B at centre due to a straight conductor = $\frac{μ _{0}}{4 π}$ 1 (sin $α$ + sin $β$ )
Net B at centre comes out to be zero