62) The region surrounding a magnet in which the influence of that magnet can be detected is called

A) magnetic length
B) magnetic dipole
C) magnetic field
D) magnetic pole strength

63) If the electric current through a copper wire increases, the magnitude of the magnetic field produced at a given point:

A) decreases
B) remains the same
C) increases
D) becomes equal to zero

64) The magnetic field at all points inside a solenoid carrying electric current:

A) is non-uniform
B) is uniform
C) does not exist
D) is always zero

65) The direction of force on a current carrying conductor in a magnetic field is given by

A) Fleming’s left-hand rule
B) Newton’s laws of motion
C) Ohm’s law
D) Joule’s law of heating

66) The magnetic field produced by a current carrying circular loop is strongest at

A) the center of the loop
B) a point outside the loop
C) the outer surface of the loop
D) every point inside the loop