The Phase Angle of a Series $R L$ Ac Circuit with A

Multiple Choice

The phase angle of a series $R L$ ac circuit with a $20.0 - \mathrm { mH }$ inductor and a certain resistor at $1000 \mathrm {~Hz}$ is $20.0 ^ { \circ }$ . What is the resistance in this circuit?

A) $145 \Omega$
B) $245 \Omega$
C) $345 \Omega$
D) $100 \Omega$
E) $200 \Omega$