Why capacitor blocks d.c. but allows a.c., Physics

Assignment Help:

Q. A capacitor blocks d.c. but allows a.c. Why?

Capacitive reactance XC = 1/ωC

= 1 / 2πνC

Where ν is the frequency of the a.c. supply.

In a d.c. circuit,ν = 0 ∴ XC = ∞

Thus a capacitor tenders infinite resistance to d.c. and blocks the d.c.

For an a.c., the capacitive reactance differs inversely as the frequency of a.c. and as well inversely as the capacitance of the capacitor.

Related Discussions:- Why capacitor blocks d.c. but allows a.c.

Motion in one dimension, A woman walks 250m in the direction 35 degrees eas...

A woman walks 250m in the direction 35 degrees east of north, then 170m directly east. (a) using graphical method, find her final displacement from the starting point. (b) compare

Pendulum, a pendulum is timed ,first for 20 swings and then for 50 swings ;...

a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/

Electrostatic shielding, a report on electrostatic shielding

a report on electrostatic shielding

Give one example for thermoplastic and thermosetting, Give one example each...

Give one example each for thermoplastic and thermosetting polymers Thermoplastics - Polyethylene, PVC etc. Thermosetting plastics - Bakelite (Phenolfomaldehyde resin), Urea

Hypothesis, short article...

short article...

Vectors and 3 Dimensional Forces, 5 example of Classification and 5 types o...

5 example of Classification and 5 types of Vectors and 3 Dimensional Forces

Vlaue of universal gravitational constant was measured by, The value of G, ...

The value of G, the universal gravitational constant, was measured experimentally by: a) Newton b) Cavendish c) Copernicus d) Kepler Ans: The value of th

Force, What is resultant force

What is resultant force

What do you mean by additive nature of charges, Q. What do you mean by addi...

Q. What do you mean by additive nature of charges? Give an example. Additive nature of charge The entire electric charge of a system is equal to the algebraic sum of electric

Electromagnetic field, If and show that they constitute a possible elect...

If and show that they constitute a possible electromagnetic field.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages