A steady current flows in a metallic conductor of non-uniform cross-section. Which of the following quantities, current, current density and drift speed are constant along the conductors?

Which of the following relation is called as current density?

Answer the following questions: A steady current flows in a metallic conductor of non-uniform cross-section. Which of these quantities is constant along the conductor: current, current density, electric field, drift speed?

Which of the following quantities do not change, when a resistor is heated by passing current through it?

Which of the following characterstics of electrons determines the current in a conductor?

When current flows in a conductor, then the ratio of the intensity of electric field E at any point within the condutor and the current density at a point is called

Prove that the current density of a metallic conductor is directly proportional to the drift velocity of electrons.

When a current flows in a conductor, the order of magnitude of drift velocity of electrons thorugh it is

The speed at which current travels in conductor is nearly: