When a charged particle moves in a uniform magnetic field at right angles to the direction of the field, which of the following changes? Speed of the particle, Energy of the particle or Path of the particle.

Explanation

To solve the question, we need to analyze the behavior of a charged particle moving in a uniform magnetic field at right angles to the field. We will consider the effects on speed, energy, and path of the particle.

### Step-by-step Solution:

1. **Understanding the Motion**:
- A charged particle with charge \( Q \) enters a uniform magnetic field \( B \) at an angle of \( 90^\circ \) (right angles) to the direction of the field.

2. **Effect on Speed**:
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