In a region of a uniform electric field \( \mathbf{E} \), a negatively charged particle is moving with a constant velocity \( \mathbf{v} = -v_0 \hat{i} \) near a long straight conductor coinciding with XX' axis and carrying current \( I \) towards -X axis. The particle remains at a distance \( d \) from the conductor.
Solution and Explanation
Draw diagram showing direction of electric and magnetic fields. The electric field E is uniform and directed, say, in the positive y-direction. The magnetic field B produced by the current in the conductor will form concentric circles around the conductor, with the direction of the magnetic field given by the right-hand rule.
Diagram:
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