MCQ
If a charged particle kept at rest experiences an electromagnetic force:
- AThe electric field must not be zero.
- BThe magnetic field must not be zero.
- CThe electric field may or may not be zero.
- DThe magnetic field may or may not be zero.
✓
Answer
- The electric field must not be zero.
- The magnetic field may or may not be zero.
Explanation:
Since particle is at rest, i.e. v=0, hence Fm=0
For electric force, E≠0
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