Question

The reading of voltmeter and ammeter in the following figure will respectively be :

• A. 0 and 2A
• B. 2A and 0V
• C. 2V and 2A
• D. 0V and 0A

Answer 1

The correct option is A 0 and 2A

In the problem $X_C=4\Omega$
and $X_L=4\Omega$
So, V across $X_C$ and $X_L$ will be same and in opposite direction, So net voltage will be zero. Since voltmeter is connected parallel to Capacitor and inductor so, it will read 0 volts.

Current $=$ $\frac{V}{impedance}$

$impedence=\sqrt{R^2+X_L^2}$

Current$=\frac{90}{\sqrt{{45}^2+4^2}}$

$=\frac{90}{45.17}$ $\simeq 2$A.