220 V 50 Hz Ac Is Applied To Resistor
220 V, 50 Hz, ac is applied to a resistor. The instantaneous value of voltage is (a) 220√2 sin 100π t ( … (c) 220√2 sin 50π…
Answers:
The correct option (a) 220√2 sin 100π t
Explanation:
V = Vm sin ωt
Vm = Vrms × √2 = 220 × √2 V
ω = 2πf = 2π × 50 = 100 π
∴ V = 220√2 sin 100π t