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  4. In a region of space, suppose there exists a uniform electric field vecE=10 hati ((V/m)) . If a positive charge moves with a velocity vecv=-2 hatj, its potential energy

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Q. In a region of space, suppose there exists a uniform electric field $\vec{E}=10 \hat{i} \left(\frac{V}{m}\right) .$ If a positive charge moves with a velocity $\vec{v}=-2 \hat{j}$, its potential energy

Electrostatic Potential and Capacitance

Solution:

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As charge moves perpendicular to $\vec{E}$, no change in energy occurs.