Question

In an inertial frame of reference, the magnetic force on a moving charged particle is $\overline{F}$. Its value in another internal frame of reference will be

• A. remain same
• B. changed due to change in the amount of charge
• C. changed due to change in velocity of charged particle
• D. changed due to change in field direction

Answer 1

Answer: (C)

changed due to change in velocity of charged particle

$\overrightarrow{F}=\overrightarrow{q}(\overrightarrow{v}\times \overrightarrow{B})\therefore F=qvBsin\theta$
which shows magnetic force is velocity dependent due to which it differs from one inertial frame to another.