railway RRB Technician Grade 1 Mock Test 2024 Physics Moving Charges and Magnetism Magnetic Force on a Current-Carrying Wire
A proton and an α – particle enter a uniform magnetic field perpendicularly with the same speed. If proton takes 25 μ sec to make 5 revolutions, then the periodic time for the α – particle would be
1
50 μ sec
2
25 μ sec
3
10 μ sec
4
5 μ sec