Question

A uniform magnetic field of induction B is confined to a cylindrical region of radius R. The magnetic field is increasing at a constant rate of $\frac{dB}{dt}T{s}^{-1}$. An electron of charge e, placed at the point P on the periphery of the field experiences an acceleration

• A. $\frac{1}{2}\frac{eR}{m}\frac{dB}{dt}$ toward left
• B. $\frac{1}{2}\frac{eR}{m}\frac{dB}{dt}$ toward right
• C. $\frac{eR}{m}\frac{dB}{dt}$ toward left
• D. zero

Answer 1

Answer: (D)

zero

No acceleration will be there as changing magnetic field does not comes force on an electron, hence no acceleration.

Hence, the answer is zero.