Question

Using an A.C. voltmeter the potential difference in the
electrical line in a house is read to be 234 volt. If the line
frequency is known to be 50 cycles/second, the equation
for the line voltage is
(a) V = 165 sin (100 π t) (b) V = 331 sin (100 π t)
(c) V = 220 sin (100 π t) (d) V = 440 sin (100 π t)

Answer 1

Explanation:

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Answer 2

Answer:

ANSWER

V=V0sin(ωt)

Vlotage in r.m.s value

V0=2×234V=331volt

and ωt=2πnt=2π×50×t=100πt

Thus, the equation of line voltage is given by

V=331sin(100πt)

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