An inductor (L = 405 mH), a capacitor (C = 4.43 µF), and a resistor (R = 400 ) are connected in series. A 50.0 Hz AC generator produces a peak current of 250 mA in the circuit.

(a) Calculate the required peak voltage ΔVmax.
V
(b) Determine the phase angle by which the current the applied voltage.
°

X(L)=2πfL

X(C) =1/2πfC
Z=sqrt{R²+ [X(L)-X(C)]²}
ΔVmax = I₀•Z
cosφ=R/Z