If I put charged particles in the center of long hollow cylinder shaped electromagnet, in a vacuum, would it accelerate them?

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2022-09-19
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asked 2022-07-22

Two charged bodies create a superposition of electrostatic fields at a point and there is no evidence of fields interference. Now, if we put two current circuits around the charged bodies then we create also magnetic fields and as a consequence two electromagnetic fields. If the electrostatic field and the magnetic field from the two positions don't interfere as waves when independently acting will their combination in the form of electromagnetic field show interference properties when combined?

asked 2022-09-25

If we make an electromagnet by winding 3000 turns on 5-inch-long cast iron bar, and provide 12V and 2A of current, it will produce the magnetic field with certain magnitude.

The question is: If we increase the weight of the objects being lifted by that electromagnet, will it consume more current? If we lift much smaller weight by that electromagnet, will it use lesser current?

The question is: If we increase the weight of the objects being lifted by that electromagnet, will it consume more current? If we lift much smaller weight by that electromagnet, will it use lesser current?

asked 2022-08-21

$\Delta I= \Delta Q / \Delta t = \vec J \cdot \Delta \vec s$

My understanding is that $\Delta$ can be replaced by $d$ which represents the differential(infinitesimally small amount) of (something). Thus, this equation becomes $dI=dQ/dt=\vec J \cdot d \vec s$. We integrate both sides and get $I=\int \vec J \cdot d\vec s=\int dQ/dt$. But I know that $I=-dQ/dt$ not $\int dQ/dt$. Can someone clear this confusion with the deltas and the differentials.

My understanding is that $\Delta$ can be replaced by $d$ which represents the differential(infinitesimally small amount) of (something). Thus, this equation becomes $dI=dQ/dt=\vec J \cdot d \vec s$. We integrate both sides and get $I=\int \vec J \cdot d\vec s=\int dQ/dt$. But I know that $I=-dQ/dt$ not $\int dQ/dt$. Can someone clear this confusion with the deltas and the differentials.

asked 2022-07-21

What spectrum of light are the electromagnetic waves that are in a field created by electricity?

asked 2022-09-25

Is the amount of energy used to power an electromagnet directly proportional to the amount of work an electromagnet does?

That is, if I were to power an electromagnet with hypothetical battery that does not drain, will that electromagnet always output the same level of magnetism, regardless of external influence such as magnetic objects attracted by the electromagnet? Does magnetism have a "cost" that diminishes the magnetic field in some way?

That is, if I were to power an electromagnet with hypothetical battery that does not drain, will that electromagnet always output the same level of magnetism, regardless of external influence such as magnetic objects attracted by the electromagnet? Does magnetism have a "cost" that diminishes the magnetic field in some way?

asked 2022-08-16

Is it possible for an electromagnet of around $50\text{}mm$ diameter to produce a force of $1000\text{}N$ at $10\text{}mm$ distance far away ferromagnetic object? If yes, how much power will it need to do so?

asked 2022-07-21

Electrons' Motion in an electromagnet is on the order of ${10}^{-4}$ m/s. That charge can be mechanically rotated in a capacitor with a million times more velocity (B produced being proportional to charge's velocity ).

Forces causing eddy currents would help to negate net magnetic field in an ordinary capacitor. However, if radially oriented, unidirectionally conducting (" chair " ) carbon nanotubes are rotated, the electrons would be relatively constrained from eddy currents.

It seems like this would allow greater magnetic field production compared to standard electromagnets.

Forces causing eddy currents would help to negate net magnetic field in an ordinary capacitor. However, if radially oriented, unidirectionally conducting (" chair " ) carbon nanotubes are rotated, the electrons would be relatively constrained from eddy currents.

It seems like this would allow greater magnetic field production compared to standard electromagnets.