1.4.2.4 Quiz: Electromagnetism Question 1 of 10
Felix connects a wire coil to an ammeter and moves a bar magnet around the
outside of the coil. He wants to show that a moving magnet can cause an
electric current in a wire. Which change should Felix make so that the
ammeter will detect a current?
O A. He must rotate the magnet as it moves around the wire coil.
B. He must move the magnet through the inside of the wire coil.
O C. He must move the magnet along the connecting wires.
O D. He must arrange the connecting wire in the correct direction.
SUBMIT

answer is must move the magnetic along the connecting wire

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.