A small resistor R (say, a lamp) is usually put in parallel with the current carrying coil of an electromagnet, fig. What prupose does it serve ?

A small resistor (say, a lamp) is usually put in parallel to be current carrying coil of an electromagnet. What purpose does it serve?

A small resisrtor say a lamp a usually put in parallel to the current carrying coil in an electromagnet. Why?

A small resistor is usually put in a parallel t the current carrying coil of an electromagnet as shown in the figure. What purpose does it serve?

In Fig. a coil of single turn is wound on a sphere of radius r and mass m. The plane of the coil is parallel to the inclined plane and lies in the equatorial plane of the sphere. If the sphere is in rotational equilibrium, the value of B is [Current in the coil is i]

In Fig. a coil of single turn is wound on a sphere of radius r and mass m. The plane of the coil is parallel to the inclined plane and lies in the equatorial plane of the sphere. If the sphere is in rotational equilibrium, the value of B is [Current in the coil is i]