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4. Moving charges and magnetism — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics4. Moving charges and magnetism1 Mark
MCQ
Electrons moving with different speeds enter a uniform magnetic field in a direction perpendicular to the field., time periods of rotation will be :
  • ✓
    same for all electrons
  • B
    greater for the faster electrons
  • C
    smaller for the faster electrons
  • D
    either $(b)$ or $(c)$ depending on the magnitude of the magnetic field
✓

Answer

Correct option: A.
same for all electrons
a
$T=\frac{2 \pi m}{q B}$

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