Question

The reading of the ammeter and voltmeters are (Both the instruments are ac meters and measures rms value) –

• A. 2A, 110 V
• B. 2A, 0V
• C. 2A, 55V
• D. 1A, 0 V

Answer 1

Answer: (B)

2A, 0V

Answer 2

The circuit is RLC resonant circuit.

\ Reading of voltmeter = V_L – V_C = 0

Reading of ammeter = $\frac{E_{rms}}{Z} = \frac{E_{rms}}{R} = \frac{110}{55} = 2A$