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In series L-C-R circuit, resistance, ind...

In series L-C-R circuit, resistance, inductance and capacitance are connected in series. The value of potential difference across three are 70 V, 90 V and 65 V respectively. The value of potential difference of A.C. source is …...

A

225 V

B

95 V

C

85 V

D

74.3 V

Text Solution

Verified by Experts

The correct Answer is:
D
`V_R=70V, V_L=90 V, V_C=65` V
`V^2=V_R^2+(V_L-V_C)^2`
`V=sqrt((70)^2 +(90-65)^2)`
`=sqrt((70)^2 + (25)^2)`
`=sqrt(4900+625)`
`=sqrt5525`=74.3 V
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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