List of top Physics Questions on Magnetic Force asked in JEECUP

One proton enters in a magnetic field of $2500 \,\text{N/Amp}\cdot\text{m}$ intensity with velocity of $4\times10^5\,\text{m/s}$ in parallel to the field. The force exerted on proton will be
A particle of charge ‘q’, mass ‘m’ and velocity ‘v’, enters perpendicular to a magnetic field ‘B’, force on particle will be
One proton enters in a magnetic field of \( 2500 \, \text{N/Amp-m} \) intensity with velocity of \( 4 \times 10^5 \, \text{m/sec} \) in parallel of the field. The force exerted on the proton will be: