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NEET-XII-Physics

39: Alternating Current

with Solutions - page 2
Qstn# ii-3 Prvs-QstnNext-Qstn
  • #3
    The peak voltage of a 220 V AC source is
    (a) 220 V
    (b) about 160 V
    (c) about 310 V
    (d) 440 V
    digAnsr:   c
    Ans : (c) about 310 V
    Given:
    Vrms = 220 V
    The peak value of voltage is given by,
    `` {V}_{p}=\sqrt{2}\times {V}_{rms}=1.414\times 220=311\,\mathrm{\,V\,}``
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