An electron beam projected along + X-axis, experience a force due to a magnetic field along the + Y-axis. What is the direction of the magnetic field?

Explanation

To determine the direction of the magnetic field when an electron beam is projected along the +X-axis and experiences a force along the +Y-axis, we can use Fleming's Left Hand Rule. Here’s a step-by-step solution:

### Step 1: Identify the Direction of Current
- The electron beam is moving along the +X-axis. Since electrons have a negative charge, the conventional current (which flows in the opposite direction to the flow of electrons) will be in the -X direction.

### Step 2: Identify the Direction of Force
- The problem states that the force experienced by the electron beam is along the +Y-axis.

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