An electron enters a region of space in which there exists an electric field ‘E’ and magnetic field ‘B’. If the electron continues to move in the same direction with same velocity as before, the NOT possible case among the following is

An electron enters a region of space in which there exists an electric field 'E' and magnetic
field 'B'. If the electron continues to move in the same direction with same velocity as before,
the NOT possible case among the following is

A
$E = 0 & B = 0$
B
$E \neq 0 & B \neq 0$
C
$E \neq 0 & B = 0$
D
$E = 0 & B \neq 0$

Solution:

: If an electron continuous to move in same direction with same velocity even after

entering a region containing E&B, Then $E = 0 & B = 0$ (or) $E \neq 0 & B \neq 0$ (or) $E = 0 & B \neq 0$

may be possible

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