A charge particle of mass m and charge q entered into magnetic field B normally after accelerating by potential difference V. Calculate radius of its circular path.

Explanation

To find the radius of the circular path of a charged particle moving in a magnetic field after being accelerated by a potential difference, we can follow these steps:

### Step 1: Determine the Kinetic Energy
When a charged particle with charge \( q \) is accelerated through a potential difference \( V \), it gains kinetic energy equal to the work done on it by the electric field. The kinetic energy \( KE \) can be expressed as:
\[ KE = qV \]

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