-In Figure 8 -2, what is the instantaneous voltage across R1 at 122°?
A)18.2 V
B)11.2 V
C)5.8 V
D)11.6 V

Question

-In Figure 8 -2, what is the instantaneous voltage across R1 at 122°?
A)18.2 V 
B)11.2 V 
C)5.8 V 
D)11.6 V

Quizplus · Accepted Answer

The instantaneous voltage across R1 is the voltage across the capacitor at that instant. The voltage across the capacitor is given by:```Vc = Vp * sin(ωt)```where:* Vc is the voltage across the capacitor* Vp is the peak voltage* ω is the angular frequency* t is the timeAt 122°, the sine function is equal to 0.5. Therefore, the instantaneous voltage across R1 is:```Vc = Vp * 0.5 = 18.2 V```

-In Figure 8 -2, What Is the Instantaneous Voltage Across