Magnetic field B on the axis of a circular coil and far away distance x from the centre of the coil are related as:

A student records the following data for the magnitudes of the magnetic field at axial points at different distances x from the centre of a circular coil of radius 'a' carrying a current 'I'. Verfity that these observations are in good agreement with the expected theoreticl variations of B with X.

How will the magnetic field intensity at the centre of a circular coil carrying current change, if the current through the coil is doubled and the radius of the coil is halved?

A cylindrical bar magnet is kept along the axis of a circular coil and near it as shown in the figure. Will there by an y iduced e.m.f. at the terminal of the coil, when the magnet is rotated about an axis perpendicular to the length of the magnet?

A uniform but time-varying magnetic field B(t) exists with in a circular region of radius a and is directed in to the plane of the paper as shown in the figure. The magnitude of the induced electric field at the point P at a distance r from the centre of the circular region

Meena draw magnetic field lines of field close to the axis of a current carrying circular loop. As the moves away from the centre of the circuit loop she observes that the lines keep on diverging. How will you explain the observations.

How does the strength of the magnetic field at the centre of a circular coil of a wire depend on:(a)radius of the coil(b) number of turns of coil.

Calculate the magnetic field due to a circular coil of 250 turns and of diameter 0.1m, carrying a current of 7A at a point on the axis of the coil at a distance 0.12m from the center of the coil.