Question

The reading of ammeter in the circuit shown will be :

• A. $2A$
• B. $2.4A$
• C. Zero
• D. $1.7A$

Answer 1

The correct option is A $2A$

Since $X_L=X_C$

So impedance of the $LCR$ circuit is given by

$Z=\sqrt{R^2-{\left(X_L-X_C\right)}^2}$

$Z=\sqrt{{55}^2+{\left(5-5\right)}^2}$

$Z=55\Omega$

Current in the ammeter is equal to current in the circuit.

$I=\frac{V}{Z}$

$I=\frac{110}{55}$

$I=2A$