Question

square of current carrying loop having in side square of current carrying loop and produce magnetic field at centre what is the magnetic moment of its centre ​

Answer 1

Answer:

"According to the given data, the centre of the square loop will have an angle of 90 degree.

sin and will be 45 degree as the diagonal from the two corners will divide the angle equally.

Now, as each side of length of a will be conducting the current in the square loop, it will be multiplied by 4 and thereby we get B ."