For a domestic AC supply of $220 \,V$ at $50 \,cps$, the potential difference between the terminals of a two-pin electric outlet in a room is (in volt) given by
For a domestic AC supply of $220 \,V$ at $50 \,cps$, the potential difference between the terminals of a two-pin electric outlet in a room is (in volt) given by
- [KVPY 2011]
- A
$V(t)=220 \sqrt{2} \cos 100 \pi t$
- B
$V(t)=220 \cos 50 t$
- C
$V(t)=220 \cos 100 \pi t$
- D
$V(t)=220 \sqrt{2} \cos 50 t$
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