In an AC series circuit, R=10Ω,XL=20Ω and XC=10Ω. Then, choose the correct options
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a
Voltage function will lead the current function
b
Total impedance of the circuit is 102Ω
c
Phase angle between voltage function and current function is 45o
d
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) cosϕ=RZ=12 Hence, ϕ=45∘ (d) Power factor =cosϕ=RZ=12