Rankers Physics

Force Acting on Moving Charges: Practice Problem & Solution

A charge moving with velocity $v$ in X-direction is subjected to a field of magnetic induction in negative X-direction. As a result, the charge will (1993)
Remain unaffected
Start moving in a circular path Y-Z plane
Retard along X-axis
Moving along a helical path around X-axis

Solution Explained:

To solve this problem, we apply the core principles of Force Acting on Moving Charges. Understanding the underlying formula is key to arriving at the correct answer below:

When velocity and magnetic field are along the same or opposite directions, the angle between them is $180^circ$. The magnetic force is zero, so the charge remains unaffected.

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