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Results tagged with electromagnetism
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user 59716
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
2
votes
Accepted
Can a train with magnets attached move with less fuel?
This situation is exactly equivalent to the train moving using normal couplers.
Note that the force required to move the train is the same ( depending on the mass of the train and the co-efficient of …
- 700
-1
votes
Can light (electromagnetic radiation) cause electromagnetic induction in a wire?
Note that light (in one of its interpretations) is a Electromagnetic Wave. Now, there is a huge difference between the oscillating magnetic field in an EM wave and a magnetic field generated by a perm …
- 700
0
votes
0
answers
32
views
GUESSING radiation from an accelerated charge
The radiation by a non-relativistic accelerated moving charge is given by the Larmor's formula $$P=\frac{2q^2a^3}{3c^3}$$ (in Gaussian units). Now is there any way to answer the following questions wi …
- 700
0
votes
In terms of the Ampere-Maxwell law, why is $\vec {E}=0$ in a wire of a capacitor circuit?
For the flat Amperian Loop,
The current flowing through the wire that pierces the surface of the loop) is I. However, there is no field piercing the surface of the loop.
Now, why is there is no fie …
- 700
5
votes
Accepted
Do permanent magnets have an electric current surrounding them?
To answer your question in one word, "Yes"
Now, onto the explanation:-
According to Faraday's Law, you will get a current in a conductor when the amount of magnetic flux linked with the conductor ch …
- 700
2
votes
Accepted
Can we reproduce sound waves passing through vacuum?
Irrespective of the inner workings of any speaker, this is what is usually done in any such situation! Think of how astronauts aboard the ISS communicate with the earth. Even if they were to shout at …
- 700