JEE Main 2019 Physics question
A particle having the same charge as of electron moves in a circular path of radius 0.5 cm under the influence of a magnetic field of 0.5 T. If an electric field of 100 V/m makes it to move in a straight path, then the mass of the particle is (Given charge of electron = C)
Answer: (D)
Solution
v = E/B = 200 m/s; kg.