PLEASE HELP WITH THIS ONE QUESTION Which of the following must be true for a current to be induced in a wire passing through a magnetic field?

A) the magnetic field and the direction of motion must be perpendicular

B) the magnetic field and direction of motion must be parallel

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward