You connect a 250-Ω resistor, a 1.20-mH inductor, and a 1.80-μF capacitor in series across a 60.0-Hz, 120-V peak) source. When you connect a voltmeter across the capacitor in this circuit, the meter reads approximately
A) 25.7 mV.
B) 83.6 V.
C) 120 V.
D) 14.2 V.
E) 84.9 V.

Question

Quizplus · Accepted Answer

The voltmeter reads the voltage across the capacitor, which is determined by the capacitive reactance and the current in the circuit. The capacitive reactance is calculated using the formula $X_C = \frac{1}{2\pi f C}$, and the current is determined by the total impedance of the circuit. The voltage across the capacitor is then found using $V_C = I \times X_C$, which results in approximately 83.6 V.

You Connect a 250-Ω Resistor, a 1