Author Question: In an LCR series circuit with XL > XC, the phase angle between the current and voltage phasors is ... (Read 77 times)

abarnes · **on:** Jul 28, 2018

In an LCR series circuit with XL > XC, the phase angle between the current and voltage phasors is 30. If the AC frequency doubles, what is the magnitude of the resulting phase angle?
a. 30
b. less than 30
c. more than 30
d. Additional information is needed to reach a determination.

Question 2

What is the intensity of a sound with a measured intensity level of 84 dB? (I0 = 10-12 W/m2)
a. 8.4 10-3 W/m2
c. 2.5 10-5 W/m2
b. 2.5 10-4 W/m2
d. 7.4 10-4 W/m2