In your original diagram you had the field vertical, but now you show force as vertical and field acting in the direction of v. Have you mislabelled the second diagram?Eitan Levy said:
I apologize, this picture isn't the same.haruspex said:
So what, exactly, is the answer given in the book?Eitan Levy said:
It says the force is opposing the velocity.haruspex said:
That is a bit vague. It does not necessarily mean that it acts antiparallel to the velocity, merely that it is in a direction that resists the movement.Eitan Levy said:
Please make sure you have stated the problem exactly as given, word-for-word. Sometimes, the reason a student is having difficulty is that they have misinterpreted the wording of the problem.Eitan Levy said:
I think what the textbook means to say is that the force is in the exact opposite direction of the current. I don't think a simple question from an assumable simple textbook would say otherwise.haruspex said:
Of the current? You mean, of the movement, perhaps? That is how Eitan is reading it, but that answer would be wrong.lekh2003 said:
Ah, yes the movement. Opposite the movement. But OP simply needs to make the problem a little more clear.haruspex said:
But it would not be directly opposite to the movement, would it?lekh2003 said:
Okay, so if we use the right hand rule with the velocity downwards and to the right, and the magnetic field upwards, then the force moves with the current. So, it is parallel, but not opposite. This is confusing me as well now, I might as well wait for the OP to respond and then continue.haruspex said:
Not sure what you mean by that. There will be an induced current. It is unclear to me whether the current stated in the question is this induced current or additional to it, but whatever...lekh2003 said:
Try googling Lenz's law.Eitan Levy said:
That only tells you the direction of the induced current. The resulting force will still be horizontal.Dadface said:
Magnetic force is a fundamental force of nature that is caused by the interaction between electrically charged particles. It is responsible for the attraction and repulsion of magnets and is also associated with the flow of electric currents.
When a wire carries an electric current, it creates a magnetic field around it. This magnetic field interacts with external magnetic fields, resulting in a force on the wire. The direction and magnitude of this force depend on the direction and strength of the external magnetic field.
The magnetic force on a wire is affected by several factors, including the strength and direction of the external magnetic field, the length and orientation of the wire, and the magnitude of the electric current flowing through the wire.
The magnetic force on a wire can be calculated using the formula F = I x L x B x sinθ, where F is the magnetic force, I is the electric current, L is the length of the wire, B is the external magnetic field, and θ is the angle between the wire and the direction of the magnetic field.
Magnetic force on a wire has numerous real-life applications, including electric motors, generators, headphones, speakers, and particle accelerators. It is also used in medical imaging devices such as MRI machines and in various industrial processes such as metal detection and magnetic levitation.
