Question

an electron enters a magnetic field at right angles to it the
direction of force acting on the electron ​

Answer 1

If we have atleast 1 component of Force in the direction or opposite to the direction of speed, then the magnitude of speed increases or decreases. But when force is perpendicular, component of force along speed=Fcos 90=0

Hence no change in magnitude. Only change in direction

Explanation:

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