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KVPY2011PhysicsAlternating Current

For a domestic AC supply of 220 ~V at 50 cycles per second, the potential difference between the terminals of a two pin electric outlet in a room is given by -

Options

  1. AV(t)=220 2 (100 t)
  2. BV ( t )=220 (50 t )
  3. CV ( t )=220 (100 t )
  4. DV(t)=220 2 (50 t )

Correct answer

A. V(t)=220 2 (100 t)

Step-by-step solution

R.M.S. value =220 ~V Peak value =220 2 =2 n =2 50=100 (t)=220 2 (100 t)

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