Question

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

• A. remained 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)

$\vec{F}=q\left(\vec{V}\times \vec{B}\right)$
$\therefore F=qvBsin\theta$
which shows magnetic field is velocity dependent due to which it differs from one inertial frame to another.