A) acceleration remains unchanged
B) velocity remains unchanged
C) speed of the particle remains unchanged
D) direction of the particle remains unchanged
Correct Answer: C
Solution :
When a charged particle moves through a perpendicular magnetic field, then a magnetic force acts on it which changes the direction of particle but does not alter the magnitude of its velocity (ie, speed). Note: If a charged particle moves at\[45{}^\circ \]to magnetic field then path of the particle will be a helix whose circular part has radius as per the relation \[r=\frac{mv\sin \theta }{qB}\]You need to login to perform this action.
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