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quantumfoam
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Why does a magnetic field produce a force on a moving charge? I would love if someone answered why and not how.
quantumfoam said:Why does a magnetic field produce a force on a moving charge? I would love if someone answered why and not how.
berkeman said:Are you familiar with the equation for the Lorentz force?
256bits said:Are you familiar with the Lorenz force?
http://en.wikipedia.org/wiki/Lorentz_force
quantumfoam said:Lol I understand the Lorentz force. I just want to know if in the world of physics, is there a reason why a moving charge interacts with a magnetic field the way it does.(:
berkeman said:There's an echo in here...
Watch what Mr Grumpy himself had to say about all this. (No, I love him, really!)quantumfoam said:I know but I was wondering if there was any deep explanation for why it happens. But the answers I have obtained here are more than I wanted(: Thank you guys!
sophiecentaur said:Watch what Mr Grumpy himself had to say about all this. (No, I love him, really!)
That's one way of looking at it. The other way is to consider the relativistic effect on the charges that are moving to set up the magnetic field (e.g. electrons moving in the wires of an electromagnet.). That way, it can all be explained in terms of electric forces. The alternatives are all valid, apparently.quantumfoam said:I recently stumbled into a Youtube video of a man explaining why a magnetic force on a moving charge appears. He said it was due to the interactions between the charges magnetic field and the external magnetic field. Is this true? I am not sure because he has posted a bunch of very helpful videos on electromagnetism. I don't expect him to be some sort of crackpot theorist.
The phenomenon of a magnetic field repelling moving charges is explained by the principle of electromagnetic induction, which states that a changing magnetic field induces an electric field. This electric field then exerts a force on the moving charges, causing them to be repelled from the magnetic field.
The strength of the magnetic field has a direct effect on the repelling force exerted on moving charges. The stronger the magnetic field, the greater the force exerted on the charges. This is because a stronger magnetic field will induce a stronger electric field, resulting in a greater repelling force.
Yes, a magnetic field can repel both positive and negative charges. This is because both positive and negative charges have a property called spin, which is a type of angular momentum. When these charges are in motion, they create a magnetic dipole, which interacts with the external magnetic field, resulting in a repelling force.
The direction of motion of the charges is crucial in determining the direction of the repelling force. The repelling force is always perpendicular to both the direction of the magnetic field and the direction of motion of the charges. This means that if the charges are moving parallel to the magnetic field, there will be no repelling force.
Yes, there is a limit to the speed at which moving charges can be repelled by a magnetic field. This limit is the speed of light, which is approximately 299,792,458 meters per second. At speeds approaching the speed of light, the repelling force becomes weaker and eventually becomes zero. This is due to the effects of special relativity, which states that as an object approaches the speed of light, its mass increases, making it more difficult to accelerate it further.