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Alternating Current — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsAlternating Current1 Mark
MCQ
The magnetic field energy in an inductor changes from maximum value to minimum value in 5.0ms when connected to an AC source. The frequency of the source:
  • A
    20Hz.
  • ✓
    50Hz.
  • C
    200Hz.
  • D
    500Hz.
✓

Answer

Correct option: B.
50Hz.
Frequency of the source is remain constant = 50Hz.

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