Question

In the given circuit xl = 400 , xc = 300 and r = 100 . Then peak value of current and phase difference between voltage and current is

Answer 1

Answer:

(a)The phase difference between current and voltage ϕ is given by

tanϕ=RXC​−XL​​

XC​=ωC1​=500Ω

XL​=ωL=100Ω

R=400Ω

Thus tanϕ=400400​=1

⟹ϕ=45∘

(b) Power factor is given by cosϕ=1

⟹ϕ=0∘

⟹tanϕ=0

⟹XC​=XL​=100Ω

⟹C=10μF

Hence an 8μF capacitor need to be connected in parallel with the given capacitor.

Explanation:

None