MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Electrical Energy

Why does curr...

Question

Why does current in a steady state not flow in a capacitor connected across a battery. However momentary current does flow during charging or discharging of the capacitor?

Open in App

Solution

Dear student
$I n t h e u n c h a r g e d c a p a c i t o r t h e p o t e n t i a l d i f f e r e n c e a c r o s s t h e c a p a c i t o r i s z e r o a n d t h e c e l l c o n n e c t e d t o i t s p l a t e s b e g i n t o w i t h d r a w t h e f r e e e l e c t r o n s f r o m o n e p l a t e c o n n e c t e d w i t h t h e p o s i t i v e t e r m i n a l o f t h e c e l l o f t h e c a p a c i t o r a n d d e p o s i t o n t h e o t h e r p l a t e o f t h e c a p a c i t o r a n d a s t h i s p r o c e s s c o n t i n u e s t h e c h a r g e o n b o t h t h e p l a t e s g o e s o n i n c r e a \sin g a n d a t s o m e t i m e i t a c q u i r e s t h a t a m o u n t o f c h a r g e c o r r o s p o n d i n g t o w h i c h p o t e n t i a l d i f f e r e n c e b e t w e e n t h e p l a t e s b e c o m e s e q u a l t o t h e p o t e n t i a l d i f f e r e n c e o f t h e c e l l a n d t h a t i n s \tan t c u r r e n t s t o p s . R e g a r d s$

Suggest Corrections

thumbs-up

0

Similar questions

Q. When an ideal capacitor is charged by a dc battery, no current flows. However, when an ac source is used, the current flows continuously. How does one explain this, based on the concept of displacement current?

Q. Assertion :Two capacitors are charged from the same battery and then connected as shown. A current will flow in anticlockwise direction, as soon as switch is closed. Reason: In steady state charges on two capacitors are in the ratio

1 : 2

.

Q. Explain why current flows through an ideal capacitor when it is connected to an a.c. source but not when it is connected to a d.c. source in a steady state.

Q. Why does a current flow when a conductor is connected to a battery?

Q. While charging/discharging a capacitor, there are charges moving towards/away from the capacitor which ensures current flow in a circuit.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Electrical Energy

PHYSICS

Watch in App

explore_more_icon

Explore more

Electrical Energy

Standard VII Physics

Join BYJU'S Learning Program

CrossIcon