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Results tagged with electromagnetism
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user 25403
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.
0
votes
Why does the coil in this apparatus reverse its direction of oscillation?
It doesn't reverse the direction. Inertia keeps the coil moving past the vertical position and as soon as it is past the vertical position, the forces come into play pushing it in the same sense as be …
- 1,618
0
votes
Electric potential energy and speed
It completely depends on whether the field is uniform or not.
JKL's answer is completely right. If we have a uniform field, the electron will move in the opposite direction with a constant accelerati …
- 1,618
6
votes
Accepted
Why this perpetuum mobile can't be possible?
This is because how much ever force the magnet is applying on the IRON (not any metal) is opposed by an equal force applied by the iron on the magnet! And since the magnet is a part of the vehicle, th …
- 1,618
3
votes
Accepted
Conversion of Moving coil galvanometer to ammeter
First things first, the resistance is connected in the circuit parallel to the galvanometer to minimise the total resistance of the ammeter. Whenever 2 resistances are connected in parallel, the equiv …
- 1,618