An a.c. generator generates an emf ‘e’ given by: e = 311 Sin

Subject

Physics

Class

ICSE Class 12

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 Multiple Choice QuestionsShort Answer Type

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6. What is the value of power factor in a series LCR circuit at resonance?
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7. An a.c. generator generates an emf ‘e’ given by: e = 311 Sin (100 πt) volt. Find the rms value of the emf generated by the generator.


Erms = 0.707 x E0

Here E0 = 311

Erms = 0.707x311

       = 219.87

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9. Describe the absorption spectrum of Sodium.
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