00:01
In this problem, we have a current carrying wire supported horizontally by two posts, carrying some current i to the right, in this case here.
00:15
And we know that the magnetic field that this wire is in makes an angle of 60 degrees with respect to the current.
00:25
Now, we also know the magnitude of the force that is acting on this wire because of the current traveling through this magnetic field.
00:38
Remember, currents or charges.
00:39
So if charge particles are moving through a magnetic field, they experience a force.
00:43
Now, we have a new expression that gives us the magnitude of the magnetic force acting on a wire, carrying current i when the wire is of length, l.
00:53
We need to remember we also know the length of this wire l, and we know the magnitude of the magnetic field, and then the angle between the direction of the current and the direction of the magnetic field.
01:05
In this case, we're asked, what is the magnitude of the magnetic field if we're given a particular force, magnetic force that this wire feels.
01:13
In this case, it's 0 .15 newtons...