Prove that for a current carrying conductor current density is directly proportional to drift velocity.

A current carrying coil represents

Prove that the current density of a metallic conductor is directly proportional to the drift speed of electron.

The magnetic field near a current carrying conductor is given by

A current carrying coil is equivalent to

Explain the construction and working of a moving coil galvanometer. Hence, show that a current flowing through it is directly proportional to the deflection.

How does magnetic field due to current carrying conductor vary?

Give force acting on a current carrying conductor placed in a uniform magnetic field.

Direction of force acting on a current carrying conductor vec (L) in an external magnetic field vec(B) is

Choose correct alternative. S.I. unit of current density is

Answer the following questions : Study the following principle and answer the questions. A force is excreted on a current - carrying conductor placed in a magnetic field. The direction of this force depends on both the direction of the current and the direction of the magnetic field . This force is maximum when the direction of the current is perpendicular to the direction of the magnetic field. By which law can we determine the direction of the force excreted on the current carrying conductor ?