Question

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

Answer 2

$\overrightarrow { \mathrm { F } } = \mathrm { q } ( \overrightarrow { \mathrm { v } } \times \overrightarrow { \mathrm { B } } ) = \mathrm { qvB } \sin \theta$

Which shows magnetic field is velocity dependent due to which it differs from one inertial frame to another.