Displacement current Definition and 53 Threads

The example of the charging capacitor is often used to show that Ampère's law cannot work in electrodynamics, since the value of the integral (I'm talking about Ampère in integral form here) would depend on the choice of surface delimited by the Amperian loop. It is then shown that since the...

Could anyone help me solve the following problem? Calculate the ratio of the conduction current density to the displacement current density of the electric field E = E_0 \cos(\omega t) in copper, to a frequence of f = 1 kHz. (Given: \epsilon_{Cu} = \epsilon_0, \rho_{Cu} = 2 \times 10^{-8}...

A 0.230-A current is charging a capacitor that has circular plates 10.0 cm in radius. (a) If the plate separation is 4.00 mm, what is the time rate of increase of electric field between the plates? (b) What is the magnitude of the magnetic field between the plates 5.00 cm from the...