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.

Distinguish between metals and semiconductors, (a) Distinguish among metals...

(a) Distinguish among metals, insulators and semiconductors on the basis of their energy bands. (b) Why are photodiodes used preferably in reverse bias condition? A photodiode i

List various problem solving techniques, P r oblem Solving Technique ...

P r oblem Solving Technique There are two approaches to solve a problem. They are:- 1.   Top down -A top down design approach starts by identifying the major components

Magnitude of a point charge, a) Two charges of the value 15X10 -9 coulomb ...

a) Two charges of the value 15X10 -9 coulomb and 30X10 -9 coulomb are locate at a distance 6 cm. Determine the intensity of electric field at point which is at a distance 2 cm fro

PHYSICS, WHAT IS THE MEAN OF HEAT

WHAT IS THE MEAN OF HEAT

Plane and the package, Plane and The Package Suppose a plane moving alo...

Plane and The Package Suppose a plane moving along with a constant speed at an elevated height above the Earth's surface. Within the course of its flight, the plane drops a pac

Calculate the potential differences across each resistor, Q. In the given c...

Q. In the given circuit, calculate the potential differences across each resistor Solution : i) R s = R 1 + R 2 + R 3 = 10Ω ii) Current in circuit I = V/R s

Big fish motion catches little fish-momentum and collision, Big Fish in Mot...

Big Fish in Motion Catches Little Fish Inelastic Collision: The animation below portrays the inelastic collision among a extremely massive fish and a less massive fish. Befor

Illustrate what is ntu in thermodynamics, Q. Illustrate what is ntu in ther...

Q. Illustrate what is ntu in thermodynamics? Answer:- The ntu is nothing but number of transfer units it is one of the method utilized to find the heat transfer of hot and

Magnetic force on a moving charge, Magnetic force on a moving charge Oers...

Magnetic force on a moving charge Oersted also discovered that anytime a charge is moving in an area where a magnetic field exists, it experiences a force which is sometimes call

With which p-type germanium should be doped, In order to obtain p-type germ...

In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity.      (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will d

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