An electron is moving with velocity v$_{0}$ î . If a uniform elect...

Question

An electron is moving with velocity v$_{0}$ î . If a uniform electric field E = E$_{0}$ ĵ is set up in the region, the electron will :

Accepted Answer

The electron has constant velocity $v_0$ along x, and experiences a constant force (hence constant acceleration) along y due to $E_0\hat j$. This is exactly analogous to projectile motion (constant velocity in one direction, constant acceleration perpendicular to it), which produces a parabolic trajectory.

Answer: (C) describe a parabolic path

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