In an ac circuit, an inductor, a capacitor and a resistor are connected in series with X L = R = X C .…

In an ac circuit, an inductor, a capacitor and a resistor are connected in series with XL=R=XC. Impedance of this circuit is :
  1. Zero
  2. R
  3. R2
  4. 2R2

Solution

Recall the formula of impedance is in terms of resistance, Z=XL-XC2+R2, here, the condition of resonance, XL=XC, it means, 
Z=XL-XL2+R2=R

Asked in: JEE Main 2021 (31 Aug Shift 1)

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