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MHT CET202124 Sep 2021Evening ShiftPhysicsAlternating CurrentActual

An alternating e.m.f. is e = e ₀ t . In what time the e.m.f. will have half its maximum value, if ' e ' starts from zero? ( T = time period)

Options

  1. AT 12
  2. BT 16
  3. CT 4
  4. DT 8

Correct answer

A. T 12

Step-by-step solution

e = e ₀ t If e = e ₀ 2 then e ₀ 2 = e ₀ t aligned & t = 1 2 & t =30^ = 6 rad & 2 T t = 6 & t = T 12 aligned

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