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.

Define distance, The real length of path traversed by a body in a sub inter...

The real length of path traversed by a body in a sub interval of time is called as distance. It is the real path travelled by an object among its final and initial positions. It is

Sonic waves, what are they and how do you measure them

what are they and how do you measure them

What is the maximum height of the ball, A ball leaves a girl's hand with an...

A ball leaves a girl's hand with an upward velocity of 6 meters per second.  What is the maximum height of the ball above the girl's hand? Ans: A ball leaves a girl's hand w

Maximum longitudinal displacement amplitude, A bar of length l is clamped a...

A bar of length l is clamped at x=0 and loaded with a mass mat x=l.(a) apply these boundary conditions to equation x=A e^(wt+kx)+Be^(wt- kx) and thereby determine an equation from

Torsional pendulum, define rigidity modulus and mention its units.

define rigidity modulus and mention its units.

VIMA, Sir What''s The Meaning/Spelling of Word VIMA In English.

Sir What''s The Meaning/Spelling of Word VIMA In English.

Thin films , Writing a paper on physics topic, select any of topic of your ...

Writing a paper on physics topic, select any of topic of your choice

Flow in the coil as a result of the motion of the magnet, A bar magnet is o...

A bar magnet is overhanging north end up well above a vertical coil of wire. The bar magnet is released and as it falls down toward the coil it falls along a path that will take it

Diffraction of water waves, Diffraction of water waves Let vibrator ...

Diffraction of water waves Let vibrator produce circular wavefronts travelling along (P). Let X, Y be two vertical glass plates immersed in the tank far away from the vib

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd