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1.
In a current carrying conductor the net charge is
2.
When no current is passed through a conductor,
3.
A current passes through a wire of non-uniform cross section. Which of the following quantities are independent of the cross-section?
4.
In the equation AB = C, A is the current density, C is the electric field, Then B is
5.
The speed at which the current travels, in conductor, is nearly equal to
6.
When a potential difference V is applied across a conductor at a temperature T, the drift velocity of electrons is proportional to
7.
For which of the following dependence of drift velocity vdon electric field E, is Ohm's law obeyed?
8.
The current density (number of free electrons perm3) in metallic conductor is of the order of
9.
A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it
10.
The electric field intensity E, current density J and specific resistance k are related to each other through the relation