AC circuit with two components given phase angle

[Hyperfluxe]

Homework Statement

A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 1.20×101 V, 60.0 Hz source is 4.70 A and lags the voltage by 4.20×101 degrees.
a) What are the two elements? (Answer A,B or C)
CL
CR
LR

Homework Equations

Phasor diagram.
V=IZ
w = 2pi*f
tan(theta)=XL - XC / R

The Attempt at a Solution

From the phasor diagram for an AC circuit (or RLC circuit), usually the +y vector is for the inductor, the -y vector is for the capacitor, and the +x vector is for the resistor. Given that the phase angle is positive, I would say that the circuit is of type LR.

 

[ehild]

Homework Equations

Phasor diagram.
V=IZ
w = 2pi*f
tan(theta)=(XL - XC) / R

Given that the phase angle is positive, I would say that the circuit is of type LR.

It is correct.

ehild