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Standard XII

Physics

Mutual Induction

In a series L...

Question

In a series L-R circuit, a sinusoidal voltage of frequency 60 Hz. and peak value 150 V is applied. The values of resistance R = 2052 and inductance L =40 mH. Then, voltage across inductance is

120 V

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72.3 V

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90.5 V

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150 V

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Solution

The correct option is C 90.5 V
Inductive reactance
$X_{L} = ω L$
where, $ω = 2 π f = 377 r a d / s, L = 40 m H$
$L = 40 \times 10^{- 3} H$
$X_{L} = (377) (0.040) = 15.08 Ω$
$(V_{0})_{L} = i_{0} X_{L} = 90.5 V$

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In a series L-R circuit, a sinusoidal voltage of frequency 60 Hz. and peak value 150 V is applied. The values of resistance R = 2052 and inductance L =40 mH. Then, voltage across inductance is

The correct option is C 90.5 VInductive reactanceXL=ωLwhere, ω=2πf=377rad/s,L=40mHL=40×10−3HXL=(377)(0.040)=15.08Ω(V0)L=i0XL=90.5V

The correct option is C 90.5 V
Inductive reactance
$X_{L} = ω L$
where, $ω = 2 π f = 377 r a d / s, L = 40 m H$
$L = 40 \times 10^{- 3} H$
$X_{L} = (377) (0.040) = 15.08 Ω$
$(V_{0})_{L} = i_{0} X_{L} = 90.5 V$