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The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120V. Then the r.m.s. value of voltage is
  • a)
    101.3 V
  • b)
    84.8 V
  • c)
    70.7 V
  • d)
    56.5 V
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The frequency of an alternating voltage is 50 cycles/sec and its ampli...
Using: Vrms = Vo/√2
     = 120/1.414
     = 84.8 V     
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Community Answer
The frequency of an alternating voltage is 50 cycles/sec and its ampli...
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