Natural Science Forum / Physics / Electromagnetism / June 2004

Curvilinear motion of a charged particle is an acceleration and hence
creates electromagnetic radiation, which reduces the kinetic energy of
the particle  (like in Bohr's hydrogen atom, where the electrons
spiral into the nucleus.)

I want to caculate the current distribution on a microstrip line (e.g.
in 40 GHz), by dividing its strip to N narrow lines every of which
will have a current I(i) (i one of the N lines). I couldnt find
anything about this subject.

F                                    F
    --                               ==================
   |  |                             |   M
   |  |                             |  ----

Consider two sets of two (very lengthy) hollow coaxial cylindrical
tubes. In each set, the inner cylinder contains positively charged
gaseous ions whereas the outer cylinder contains negatively charged
gaseous ions. Conduction takes place by the movement of positively

Given two magnets (cylindrical in nature, of radius r1 and r2, and
lengths l1 and l2, with a S->N axis of x1, x2, expressed as a vector,
and a location of the middle point on the N end of the magent, loc1 and
loc2) how does one calculate the particular magnetic field at a ...

I am looking to find out the speed of a repelling magnet. I assume
this depends on many variables. To give you an example, the repelling
magnets of the maglev train or perhaps holding two magnets together
and release. Is their a theoretical limit?

WOULD U PLEASE HELP ME CLEAR THIS DOUBT.  THIS IS A SIMPLE THOUGHT
EXPERIMENT REGARDING CHARGES IN MOTION.  I WOULD BE GREATFUL TO U IN
TRYING TO ANSWER ME AND CLEARIGN MY DOUBT --THANK YOU.
NOte:-this is a doubt i expressed in a blog group

/A loop a wire produces a current when moved in/out of a magnetic field.
A solenoid produces a magnetic field when a current moves through it.
If the solenoid has a magnetic core (ferrous) the strength of the
generated magnatic field increases./

Dear sir,
I would like to  know any   Electro magnetic Simulation package which
can Evaluate the Loaded current of Alternator with a fixed out
voltage.

The previous posts regarding Faraday disks are very interesting.
Of note, I see reference that the brushes are the stator, and the
rotor is the disk etc.
This concerns me, because it would mean that my ideas for a Faraday

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Should we derive concept out of a mathematical equation or should we
apply maths to concept? Former can mislead us. Here is a small
example. ('Flux linkages and electromagnetic induction' by L.V.Bewley)
       Consider a transformer core with round cross section. Equation

I am grateful for this very polite reply, which I had not seen
earlier.  Sorry for this late reply.
Arindam.

Can anybody direct me to information to calculate the current produced
when moving a magnet sideways (parallel to the are of the loop) of a
coil of wire?
From what I've read it really shouldn't produce much current, but the

Treating magnetic field as real and based on known experimental
evidence, followings are the properties of the magnetic field.
1.    During acceleration of a charge magnetic field is generated. It
spreads in the space at a velocity of light and its strength at any