A) in an elliptical orbit
B) in a circular orbit
C) along a parabolic path
D) along a straight line
Correct Answer: B
Solution :
If both electric and magnetic fields are present and perpendicular to each other and the particle is moving perpendicular to both of them with \[{{F}_{e}}={{F}_{m}}\]. In this situation \[\overset{\to }{\mathop{\mathbf{E}}}\,\ne 0\] and\[\overset{\to }{\mathop{\mathbf{B}}}\,\ne 0\]. But if, electric field becomes zero, then only force due to magnetic field exists. Under this force, the charge moves along a circle.You need to login to perform this action.
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