Question

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