PhysicsNEET 2020Ohm's law, resistivity, temperature dependence

Current Electricity

A charged particle having a drift velocity of $7.5 \times 1 0^{- 4} m s^{- 1}$ in an electric field of $3 \times 1 0^{- 10} V m^{- 1}$ has a mobility, in $m^{2} V^{- 1} s^{- 1}$ , of:

A. $2.25 \times 1 0^{15}$
B. $2.5 \times 1 0^{6}$ ✓
C. $2.5 \times 1 0^{- 6}$
D. $2.25 \times 1 0^{- 15}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Current Electricity

More from this chapter in past papers