MCQ
When an electron moves through a magnetic field, its speed will:
- ADecrease.
- BIncrease.
- ✓Remain the same.
- DIncrease first and then decrease.
✓
Answer
Correct option: C.
Remain the same.
The work done by magnetic force on any moving charge particle is zero because magnetic force acts perpendicular to the direction of motion. Therefore speed will remain same.
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