Multiple choice

A circuit consists of a resistor, an inductor and a capacitor connected in series to a 150 V AC mains. For the circuit, R = 9 Ohms, XL = 28 Ohms and XC = 16 Ohms. What is the value of the current in the circuit?

  1. 10 A

  2. 15 A

  3. <font size="2"><font face="Arial">20 A</font></font>

  4. 25 A

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Z = $\sqrt{R^2 + (X_L - X_C)^2 }$ = $\sqrt{9^2 + (28 - 16)^2 }$ = 15 Ohms = I = 150/15 = 10 A