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Solution


Q.

An ac source is connected in the given circuit. The value of ϕ will be        [2023]
1 60°  
2 90°  
3 30°  
4 45°  

Ans.

(4)

tanϕ=XLR(Inductor reactance)(Resistance)

XL=ωL=100π×1π=100Ω;  R=100Ω

tanϕ=100100=1⇒ϕ=45°