A) \[\frac{|\vec{E}|}{|\vec{B}|}\]
B) \[\vec{E}\times \vec{B}\]
C) \[\frac{|\vec{B}|}{|\vec{E}|}\]
D) \[\vec{E}.\vec{B}\]
Correct Answer: A
Solution :
For electron to pass undeflected, electric force on electron = magnetic force on the electron \[i.e.,eE=evB\] \[orv=\frac{E}{B}\] \[orv=\frac{|\vec{E}|}{|\vec{B}|}\]You need to login to perform this action.
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