NEET2020PhysicsCurrent ElectricityActual
A charged particle having drift velocity of 7.5 × 10 − 4   m   s − 1 in an electric field of 3 × 10 − 10   V   m − 1 , has a mobility in m 2   V – 1   s – 1 of:
Options
- A2.5 × 10 6
- B2.5 × 10 – 6
- C2.25 × 10 – 15
- D2.25 × 10 15
Correct answer
A. 2.5 × 10 6
Step-by-step solution
Drift velocity is given by, v d = E × μ ⇒ μ = v d E = 7 .5 × 10 − 4 3 × 10 − 10 μ = 2.5 × 10 6   m 2   V - 1   s - 1