A charged particle would continue to move with a constant velocity in a region wherein, which of the following conditions is not correct?

Question

A charged particle would continue to move with a constant velocity in a region wherein, which of the following conditions is not correct? (A) E=0, B ≠0 (B) E ≠0, B ≠0 (C) E ≠0, B =0 (D) E=0, B=0

Tardigrade Admin · Accepted Answer

We know,
A body moves with a constant velocity only of there is no net external torque or force.
Case A

E = 0

no net Electric force

B \neq = 0

no net magnetic force when

v

is perpendicular to

B

Case B

E \neq = 0, B \neq = 0

There is net Electric as well as magnetic Force, but there is case when both get balanced.
Case C

E \neq = 0

, Electric force not exists,

B \neq = 0

magnetic force exist.
Here, one of them os non zero and imbalanced.
Hence it is case when the condition fails.
Case D

E = 0, B = 0

Here neither magnetic force exist nor the Electric force.

Q. A charged particle would continue to move with a constant velocity in a region wherein, which of the following conditions is not correct?

$E = 0$ , $B \neq = 0$

$E \neq = 0$ , $B \neq = 0$

$E \neq = 0$ , $B = 0$

$E = 0$ , $B = 0$

Q. A charged particle would continue to move with a constant velocity in a region wherein, which of the following conditions is not correct?

E=0, B=0

E=0, B=0

E=0, B=0

E=0, B=0

$E = 0$ , $B \neq = 0$

$E \neq = 0$ , $B \neq = 0$

$E \neq = 0$ , $B = 0$

$E = 0$ , $B = 0$