How is the Displacement Current Used to Resolve Issues with Ampere's Law?

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    Ampere's law Law
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The discussion centers on how the displacement current resolves issues with Ampere's Law, particularly in scenarios involving time-varying electric fields. It highlights that Ampere's Law is valid only for static currents, and when charge builds up, the displacement current term (jd) must be included to maintain continuity in the equations. An example provided involves radio antennas, where the accumulation of charge at the wire's end affects the magnetic field due to the changing electric field. The conversation also touches on the importance of understanding the terminology, specifically the correct pronunciation of "mu." Overall, the displacement current is essential for accurately applying Ampere's Law in dynamic situations.
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Hi I was wondering if you can help me.

How is the concept of the displacement current used to resolve the ploblems with the application of Ampere's law.

I know that the modified ampere's law is

curl(B)=Mew(0)(jc+jd)

I just know how the displacement current jd is used to solve the ploblems with amperes law in the continuity equation

If anyone at all help me I would be greatful. It is a pass exam paper that I am revising, and is worth 6 marks.

thanks in advance

hhh79bigo
 
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Ampere's Law is only valid for "static" currents.
If there's a time-dependance (charge build-up),
then its dE/dt also is surrounded by curling B.

Is this a "practical" application whee Ampere fails?

In a radio antenna, current up a wire accumulates
Q at the end; B is stronger at top due to dE/dt.
 
by the way...

it's "mu," not "mew."

mu: the greek letter.

mew: the sound a cat makes.

:biggrin:
 
To be honest with you that isn't much help at all really. Why post something if you don't know the answer?

A cat makes a meow sound by the way!
 
hhh79bigo said:
To be honest with you that isn't much help at all really. Why post something if you don't know the answer?

A cat makes a meow sound by the way!

alright, then.

mew: the 151st pokemon, from the original series. :-p
 
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