CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

In the given circuit, peak voltage across the resistor and capacitor are 6V and 8V. At an instant when voltage across capacitor is 4V in magnitude,

A
Voltage across resistance is 33 V
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Voltage across resistance is 33 V
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Peak source voltage is 53
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Current in circuit is ahead of source voltage
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct options are
A Voltage across resistance is 33 V
B Voltage across resistance is 33 V
D Current in circuit is ahead of source voltage
VR=VRmaxsin(ωt+θ)=6sin(ωt+θ)
VC=VCmaxcos(ωt+θ)=8cos(ωt+θ)
At an instant, voltage across the capacitor is 4V
8cos(ωt+53)=4cos(ωt+53)=12sin(ωt+53)=±32VR=6sin(ωt+53)=±6×32=±33
Vsource max=V2Rmax+V2Cmax
= 10V
In an RC circuit, current always leads voltage.



flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Series RLC
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon