Question

Solve above question with explanation. Wrong ans will be deleted.
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Answer 1

option c is the correct answer

hope it helps you ✌️✅✅✅

Answer 2

Solution : Option C

Explanation:

As we know that phase difference for L, C, R series circuit is given by.

tan Φ = XL - Xc / R

When L is removed tan π/3 = Xc /R.

√3 = Xc / R

=> Xc = R√3

When C is removed tan π /3 = Xc / R

√3 = Xc / R

=> Xc = R √3

When C is removed, tan π/3 = √3 = XL / R

=> XL = R √3

Hence, in resonant circuit

tan Φ = (√3R - √3R ) / R = 0

So, Φ = 0

Power factor, cos Φ = 1

It is the condition of resonance, therefore, phase difference between voltage and current is zero

and power factor, cos Φ = 1