Generating Electricity with Magnets: Explained with Equations | Cell-Safe Post

In summary, magnets can generate electricity through electromagnetic induction by creating a magnetic field that induces a flow of electrons in a conductor. The equation for calculating the voltage generated by a magnet is V = B x L x V x sin(theta). Any magnet can be used to generate electricity, with stronger magnets producing more electricity. This process is safe for electronic devices and the electricity generated can be stored in batteries or used directly in a circuit to power devices or converted into other forms of energy.
  • #1
jakrabb
10
0
ok, I'm on my cell so forgive the spelling :) This question will be in stages so no one posts all the answers at once and nobody else gets to have fun...
First Thing: let's explain How electricity is generated when sliding it through coils of wire. The equations would be very nice also, if anyone has those.
 
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  • #2
In other words you want a University level year long course in 25 words or less!
Please read this thread before posting anymore questions.

Post all further questions and responses to the above thread.
 
  • #3


Generating electricity with magnets, also known as electromagnetic induction, is a process that involves moving a magnet through a coil of wire or vice versa. This movement creates a changing magnetic field, which in turn induces a current in the wire. This phenomenon was first discovered by Michael Faraday in 1831 and is the basis for how most electricity is generated today.

The equation that describes this process is known as Faraday's law of induction, which states that the induced electromotive force (EMF) in a closed loop is equal to the rate of change of the magnetic flux through the loop. Mathematically, this can be expressed as:

EMF = -N * (ΔΦ/Δt)

Where N is the number of turns in the coil, ΔΦ is the change in magnetic flux, and Δt is the change in time.

The unit of magnetic flux is the weber (Wb), which is equivalent to tesla-meter squared (T*m^2). The unit of time is seconds (s), and the unit of EMF is volts (V).

Another important equation in this process is Ohm's law, which relates the current (I) in a circuit to the voltage (V) and resistance (R). It can be expressed as:

V = I * R

Combining Faraday's law and Ohm's law, we can derive the equation for the current induced in the wire:

I = EMF/R = -N * (ΔΦ/Δt)/R

This equation shows that the current induced is directly proportional to the rate of change of magnetic flux and the number of turns in the coil, and inversely proportional to the resistance of the circuit. This is why coils with more turns and lower resistance are more effective in generating electricity with magnets.

In summary, by moving a magnet through a coil of wire, we can create a changing magnetic field that induces a current in the wire. This process is described by Faraday's law and can be quantified using equations that relate EMF, magnetic flux, current, and resistance.
 

1. How do magnets generate electricity?

Magnets generate electricity through the process of electromagnetic induction. When a magnet is moved near a conductor, such as a wire, it creates a magnetic field that induces a flow of electrons within the wire, generating electricity.

2. What is the equation for calculating the voltage generated by a magnet?

The equation for calculating the voltage generated by a magnet is V = B x L x V x sin(theta), where V is the voltage, B is the magnetic field strength, L is the length of the conductor, and theta is the angle between the magnetic field and the direction of motion.

3. Can any magnet be used to generate electricity?

Yes, any magnet can be used to generate electricity as long as it is moved near a conductor. However, stronger magnets will generate more electricity due to their higher magnetic field strength.

4. Is using magnets to generate electricity safe for electronic devices?

Yes, when used properly, magnets can be safely used to generate electricity for electronic devices. The process of electromagnetic induction does not produce any harmful radiation or interfere with the operation of electronic devices.

5. How is the electricity generated by magnets stored and used?

The electricity generated by magnets can be stored in batteries or used directly by connecting the conductor to a circuit. It can then be used to power electronic devices or converted into other forms of energy, such as mechanical or thermal energy.

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