WBJEE · Physics · Electromagnetic Waves
A charged particle moves with constant velocity in a region where no effect of gravity is felt but an electrostatic field \(\overrightarrow{\mathrm{E}}\)
together with a magnetic field \(\vec{B}\) may be present. Then which of the following cases are possible?
- A \(\vec{E} \neq 0, \vec{B} \neq 0\)
- B \(\vec{E} \neq 0, \vec{B}=0\)
- C \(\vec{E}=0, \vec{B}=0\)
- D \(\overrightarrow{\mathrm{E}}=0, \overrightarrow{\mathrm{B}} \neq 0\)
Answer & Solution
Correct Answer
(D) \(\overrightarrow{\mathrm{E}}=0, \overrightarrow{\mathrm{B}} \neq 0\)
Step-by-step Solution
Detailed explanation
If a charged particle is moving in a gravity-free space without changing its velocity, then three cases possible (i) Particle can move with constant velocity in any direction, if \(\vec{E}=0, \vec{B}=0\). (ii) If \(\vec{E}, \vec{B}\) are having values such that \(q E=q v B\) and…
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