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A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity then
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its velocity will decrease.
its velocity will decrease.
$\vec{F}=-e[\vec{E}+\vec{v} \times \vec{B}]=-e \vec{E}$
$\vec{a}=-\frac{e \vec{E}}{m}$
$v(t)=v_{\circ}-\frac{e E}{m} t$
$\vec{a}=-\frac{e \vec{E}}{m}$
$v(t)=v_{\circ}-\frac{e E}{m} t$
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