What affects the direction of the current moving through a wire? check all that apply.

the direction the wire moves in
the thickness of the wire
the direction of the magnetic field
the type of magnet
the direction of the needle on an ammeter

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Which notation is used to represent an alpha particle? a. b. c. d.

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9