A cylindrical bar magnet is kept along the axis of a circular coil. Will there be a current induced in the coil if the magnet is rotated about its axis? Give reasons.

Find an expression for the magnetic field at points on the axis of a circular current loop.

Find an expression for the magnetic field at a point on the axis of a circular current loop.

An infinitely long straight current carrying wire produces a magnetic field B at a point at a distance 'a' from it. What must be the radius of the circular loop, so that for the same current through it the magnetic field at (i) its dentre equals B/2

What is the direction of magnetic filed at the centre of a circular coil carrying current.

How does the magnetic field at the centre of a current carrying circular coil change, when current is doubled and its radius is halved?