Electromagnetic fields+voltage=hard homework

AI Thread Summary
In the discussion about creating an electromagnet, participants clarify how voltage influences the electromagnetic field's magnitude and power. The magnetic field strength is defined by the equation F = ILB, indicating that increased voltage leads to higher current. The concept of "power" in this context refers to the power dissipated in the coil, calculated using P = IV and P = (V^2)/R, where R is the resistance. Thus, higher voltage results in increased current and subsequently greater power in the magnetic field. Understanding these relationships is crucial for the project.
Emmsey Square
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Alright, I'm doing a project where I'm supposed to make an electromagnet, and then figure out how the voltage affects both the magnitude and the power of the electromagnetic field. Can anyone give me some good equations to use, or something?
 
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how the voltage affects both the magnitude and the power of the electromagnetic field

Magnetic field strength is given by

F = ILB

The obvious answer is that the more voltage you have, the higher the current in the line will be.
 
Last edited:
Originally posted by Emmsey Square
Alright, I'm doing a project where I'm supposed to make an electromagnet, and then figure out how the voltage affects both the magnitude and the power of the electromagnetic field. Can anyone give me some good equations to use, or something?

Is the question just about the strength of the magnetic field (magnitude), or is there a second thing? The "power" of a magnetic field doesn't make any sense.

THere would be the power dissipated in the coil of wire while it created the magnetic field: P=IV and V = IR put together give you P = (V^2)/R where R is the resistance in the wire.
 
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Well, Voltage=CurrentxResistance. So, the more voltage you have, the more current there is. And the more current you have, the more "power" your magnetic field has.
 

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