What is drift velocity `(v_(d))`?

A current flows through a rectangular conductor in the presence of uniform magnetic field B pointing out of the page as shown. Then the potential difference V_(P)-V_(Q) is equal to (assume charge carriers in the conductor to be positively charged moving with a drift velocity of v )

Ratio of number density of holes is (7)/(5) and ratio of their current is (7)/(4) in a semiconductor. The ratio of their drift velocity is …….

In the system shown, the block A is moving down eith velocity v_(1) and C is moving up with velocity v_(3) . Express velocity of the block B in terms of velocities of the blocks a and C.

A point traversed half the distance with a velocity v_(0) . The remaining part of the distance was covered with velocity v_(1) for half the time, and with velocity v_(2) for the other half of the time. Find the mean velocity of the point averaged over the whole time of the motion.

Two bodies move in a straight line towards each other at initial velocities v_(1) and v_(2) and with constant acceleration a_(1) and a_(2) directed against the corresponding velocities at the initial instant. What must be the maximum initial separation between the bodies for which they meet during the motion ?

Define drift velocity of free electron . If relaxation time is r then write a vector relation b etween drift velocity and electric field.

Free electron number density in one wire is n, its area of cross-section is A, and drift velocit of electrons is v_(d) Then electric current forme in this wire is ......

A body covers one-third of the distance with a velocity v_(1) the second one-third of the distance with a velocity v_(2) , and the last one-third of the distance with a velocity v_(3) . The average velocity is:-