In an AC series circuit, R=10Ω,XL=20Ω and XC=10Ω. Then, choose the correct options

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Voltage function will lead the current function

Total impedance of the circuit is 102Ω

Phase angle between voltage function and current function is 45o

Power factor of circuit is 12

answer is A.

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Detailed Solution

(a) XL>XC, hence voltage function will lead the current function.(b) Z=R2+XL−XC2 =(10)2+(20−10)2 =102Ω(c) cos⁡ϕ=RZ=12 Hence, ϕ=45∘ (d) Power factor =cos⁡ϕ=RZ=12

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