In a magnetic field of 2.50 x 10-3T such that magnetic force is equal to its weight then proton moves with the speed of

In a magnetic field of 2.50 x 10-3T such that magnetic force is equal

1.	In a magnetic field of 2.50 x 10-3T such that magnetic force is equal to its weight then proton moves with the speed of
A.	3.09 x 10-5 m/s
B.	4.09 x 10-5 m/s
C.	2.09 x 10-5 m/s
D.	0.09 x 10-5 m/s
Answer» C. 2.09 x 10-5 m/s