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.

Difference between linear model and nonlinear model, 1. What is the differe...

1. What is the difference between finite elements, finite difference, and finite volume? 2. What is stability, consistency, and convergence of a difference equation? 3. What

Conducting materials, A copper wire whose diameter is 0.16 cm carries a ste...

A copper wire whose diameter is 0.16 cm carries a steady current of 10 A. What is the current density of the wire?Also calculate the drift velocity of the electrons in copper.

Detectors and dielctrics, 1. What is the principle of gas filled detectors?...

1. What is the principle of gas filled detectors? 2. What are nuclear radiations or particle detectors?

The algebra of dimensionality, Rule 1: In order to sum or subtract two phys...

Rule 1: In order to sum or subtract two physical quantities the quantities must have the similar dimension. The final physical quantity has the similar dimensions. Physical quantit

Mechanics, components of force in two given direction

components of force in two given direction

Maxwells electromagnetic equations, Starting from Maxwell's electromagnetic...

Starting from Maxwell's electromagnetic equations in vacuum, get the wave equations for the four fields vectors E, D, B and H.

greatest and least magnitude , The greatest and least magnitude of the res...

The greatest and least magnitude of the resultant of two forces of constant magnitude are P & Q. Proof that when the forces act at an angle of 2 alpha, their resultant is of magnit

Determine the component of the force, Water flows through a right angle val...

Water flows through a right angle valve at the rate of 1000 lbm/s as shown in the figure. The pressure just upstream of the valve is 90 psi and the pressure drop across the valve i

Nand gate, construction of nand gate?

construction of nand gate?

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