If a proton moving into the page*screen*, perpendicular to the surface, enters an external magnetic field and experiences a force directed west, then the magnetic field direction is pointing?
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1 - A compass in a magnetic field will line up __________.
(A) - with the north pole pointing perpendicular to the magnetic field
(B) - with the north pole pointing opposite the direction of the magnetic field
(C) - with the north pole pointing in the direction of the magnetic field
2 - The magnetic field lines due to a straight, current-carrying wire are __________.
(A) - straight lines parallel to the wire
(B) - circles around the wire
(C) - straight lines perpendicular to the wire
3 - Two parallel wires carry a current in the same direction. There is ___________ between the wires.
(A) - a repulsive force
(B) - no force
(C) - an attractive force
4 - The direction of the magnetic force on a moving charged particle in a magnetic field is __________.
(A) - both perpendicular to the velocity and perpendicular to the magnetic field
(B) - perpendicular to the magnetic field
(C) - perpendicular to the velocity
A proton moving with a speed of 2.03รยท105 m/s in the positivey-direction enters a uniform magnetic field of 0.361 T pointing inthe positive x-direction. Calculate the magnitude of the force onthe proton.
A proton moving at a constant velocity of 10^6 m/s enters a region of uniform magnetic field perpendicular to its velocity. If the magnetic field is 5T, find the force on the proton. What will the force be if the proton's velocity makes a 45 degree angle with the field direction?