At the centre of a circular coil carrying current, the magnetic filed is________.

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

The dipole moment of a circular loop carrying a current I , is m and the magnetic field at the centre of the loops is B_(1) . When the dipole moment is doubled by keeping the current constant , the magnetic field at the the centre of the loop is B_(2) . The ratio (B_(1))/(B_(2)) is

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

Determine the magnetic induction at the centre of a circular coil of radius r carrying a current I with the help of the Biot-Savart law.

Magnetic field intensity H at the centre of a circular loop of radius r carrying current I e.m.u is

A student records the following data for the magnitudes (B) 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. Verify (for any two) that these observations are in good agreement with the expected the oretical variation of B with x.

Calculate the torque acting on a rectangular coil carrying current I placed in a uniform magnetic field when the plane of the coil is perpendicular to the magnetic lines of force.

Derive an expression for the torque on a rectangular coil of area A carrying. A current I and placed in a uniform magnetic field B. Indicate the direction the torque acting on the loop.

A long straight current carrying conductor is kept along the axis of circular coil carrying same current. What will be the mutual force between them?