MCQ
In a certain arrangement, a proton does not get deflected while moving through a magnetic field region. Under what condition is it possible?
- ✓$F = 0$
- B$F = 180N$
- C$F = -180N$
- D$F = 3600N$
✓
Answer
Correct option: A.
$F = 0$
Magnetic force on a proton is $\text{Fm}=\text{qv}\text{B}\sin(\theta).$
A proton moving parallel or antiparallel to a magnetic field does not experience any force.
Hence, the proton does not get deflected while moving through a magnetic field region.
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