At $1.0 \mathrm { kHz }$, the phase angle of an $R L C$ series circuit with a capacitive reactance of $40 \Omega$, a resistance of $100 \Omega$, and a certain inductor is $40 ^ { \circ }$. What is the inductance in this circuit?
A) $62 \mathrm { mH }$
B) $120 \mathrm { mH }$
C) $20 \mathrm { mH }$
D) $210 \mathrm { mH }$
E) $12 \mathrm { mH }$

Question

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The Answer of At $1.0 \mathrm { kHz }$, the phase angle of an $R L C$ series circuit with a capacitive reactance of $40 \Omega$, a resistance of $100 \Omega$, and a certain inductor is $40 ^ { \circ }$. What is the inductance in this circuit?
A) $62 \mathrm { mH }$
B) $120 \mathrm { mH }$
C) $20 \mathrm { mH }$
D) $210 \mathrm { mH }$
E) $12 \mathrm { mH }$

At 1.0kHz1.0 \mathrm { kHz }1.0kHz , the Phase Angle of An

At $1.0 \mathrm { kHz }$ , the Phase Angle of An