# Modified Ampere's law

#### hhh79bigo

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.

hhh79bigo

Related Introductory Physics Homework Help News on Phys.org

#### lightgrav

Homework Helper
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.

#### hhh79bigo

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!!!!

#### Astronuc

Staff Emeritus

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. :tongue:

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