Magnetic field can exert a force on moving charges. Thedirection of magnetic force on a moving charge is:Parallel to both the magnetic field and charge velocity.Par...

Considering the magnetic force law, are the velocity and magnetic field always perpendicular? Are the force and velocity always perpendicular? What about the force and magnetic field?

This problem covers the concept of the magnetic force honor moving charge. The magnetic force on a moving charge equals the charge Q. Into the velocity vector across the magnetic field victor. Okay? So we can say the magnetic field force is directly proportional to the church, take her, and the magnetic field force exactly proportional to the magnitude doctor magnetic field. Okay? And the direction of the magnetic field force is perpendicular to the direction of the velocity, and the direction of the magnetic field force is perpendicular to the direction of the magnetic field. And we can also say the magnetic full force depends on borders, sign off the church. So the option A. B C. D. All options are correct. So the correct option is option E. He says all of the ever were correct.

So here we're going to use 1/3 right hand roll to find the magnetic, the magnetic force on the wire. And we are placing the current, um, perpendicular to, uh, the magnetic Earth's magnetic field. So if Earth's magnetic field was running north south, we're placing this current east west. Now we can I point your fingers, um, in the direction of magnetic field. So we we can say curl fingers in direction of the magnetic field, and we can then say that we're going to say the thumb your thumb would be in the direction of the current. And so we can say that than the palm of your hand will be the face in the direction we'll face in the direction of the force on the wire. And so if we were to if the fingers, if we could say the fingers of the right hand are directed north and then the thumb is directed east, then we can say that the palm of your hand is facing upward, or in this case, we can say that. Then the magnetic force on the wire is upwards away from the surface of the earth. Of course, this magnetic field is the magnetic forces, usually much, much less than the force of gravity, especially in a wire that isn't too large. Um, And so, uh, the A wire isn't going to levitate. Usually, wires don't levitate. Um, because the gravitational force simply overcomes the magnetic force. Whatever it may be, that is the end of the solution. Thank you for watching.

Can say that. Then the force is Equalling to the charge. Multiply by the cross product of the vector of the velocity vector and the magnetic field factor. In this case, that means that, uh, the force factor is orthogonal to the velocity vector and the magnitude vector. And if that occurs, we can say that then the force vector is always perpendicular to the, uh, velocity vector. And essentially, this means that, of course, no work is the work is not done on the object. And if work isn't done on the object, of course, then the change in the kinetic energy is gonna equals zero jewels. So we can say that, yes, a magnetic field can exert a force on a charged particle, but the field cannot change the particles kinetic energy, because the for spectre is always perpendicular to the velocity vector For the charged particle, that is the end of the solution. Thank you for watching

Hello, students In this problem, we have given that the magnetic force on a charge which is moving on a magnetic field with velocity V is equal toe que all right victor product with magnetic field. This is the formula we should know Now, Here we have given the value off charge, Q is equal to minus 800 into 10 to the power minus six school on and the value off re velocity is three into 10 to the power four in positive X direction in positive extraction, that means I can. And the value off magnetic field is five Tesla in negative y direction. That means minus Jacob. So now we will find the magnitude and the direction off the force that the magnetic field exerts on the charge particle. Right. So we will put the values here, so force will be equal to minus eight when zero into 10 to the power minus six in tow, three into tend to devour four into five. I Gap cross minus Jacob. We know that I director across director is equal toe character. So this will This will be equal to mine escape so we can write it. The F force will be equal toe eight into three in 25 into 10 to the power minus two K cab. This will be equal toe 1 20 in to 10 to the power minus two. Que, Kev, this is the value of force in Newton. And here we can see the magnitude off forces equal toe 1.2 Newton. And the direction in a direction is in the positive jed direction. From here, we can see this is positive cake. Yeah, I hope I answered your question. Thank you.