A steady current flows in a metallic conductor of nonuniformcross-section. The quantity constant along thelength of the conductor is :
2.
The length of a conductor is halved. Its conductance willbe :
3.
A current of 3.2 A is flowing through a conductor, thenumber of electrons flowing per second is :
n = i/e
= 3.2/1.6
4.
If the number of free electrons is 5 x 1028 m-3 then thedrift velocity of electron in a conductor of area ofcross-section 10-4 m2 for a current of 1.2 A is :
Vd/1/meA
=12/5
5.
A wire of resistance R is stretched so that its lengthincreases by 10%. The resistance of the wire increases by :
