When a charged particle moves at right angles to the magnetic field, the variable quantity is?(a) Momentum(b) Speed(c) Energy(d) Moment of inertiaThe question was posed to me during an interview for a job.This is a very interesting question from Magnetic Field in chapter Electromagnetism of Basic Electrical Engineering

When a charged particle moves at right angles to the magnetic field, t

1.	When a charged particle moves at right angles to the magnetic field, the variable quantity is?(a) Momentum(b) Speed(c) Energy(d) Moment of inertiaThe question was posed to me during an interview for a job.This is a very interesting question from Magnetic Field in chapter Electromagnetism of Basic Electrical Engineering
Answer» Correct OPTION is (a) MOMENTUM The EXPLANATION is: When a charged particle moves perpendicular to the field, its speed remains the same whereas its velocity keeps on changing. Momentum is the PRODUCT of the mass of the particle and the velocity if the particle, hence since velocity VARIES, momentum also varies.

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