Question

When a charged particle moves at right angle to a magnetic field quantity that changes is:

• A. Momentum
• B. Speed
• C. Moment of Inertia
• D. Energy

Answer 1

The correct option is A Momentum

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.

When a charged particle moves at right angle to a magnetic field quantity that changes is momentum.