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A sinusoidal voltage of frequency $60 H z$ and peak value $150 V$ is applied to a series L-R circuit, where $R = 20 Ω$ and $L = 40 m H$ then which of the following is wrong

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Inductive reactance is15.08 Ω

Impedence is 25.05 Ω

Peak current is nearly 6A

Time period is 0.033sec

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detailed solution

Correct option is D

XL=Lω=40×10−3×2×π×60=15.08 Ω Z=R2+(Lω)2=(20)2+(15.08)2=25.05Ω T=1f=160 i0=V0Z=15025.05≃6A

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A sinusoidal voltage of frequency 60Hz and peak value 150V is applied to a series L-R circuit, where R=20Ω and L=40mH then which of the following is wrong

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A sinusoidal voltage of frequency $60 H z$ and peak value $150 V$ is applied to a series L-R circuit, where $R = 20 Ω$ and $L = 40 m H$ then which of the following is wrong