Question

Hiro wants to model the magnetic field of a bar magnet using a shoe box and pipe cleaners. He labels the ends of the shoe box N and S.
How should he position the pipe cleaners? Check all letters that apply.

a) They should exit the box at N and enter at S.
b) They should exit the box at S and enter at N.
c) They should be put inside the box so the two ends join.
d) None should be put inside the box.
e) They should form loops outside of the box over the top, bottom, and sides of the box.
f) They should form loops outside of the box, but over only the sides of the box.
g) Mark this and return Save and Exit

Answer 1

A) They should exit the box at N and enter at S.  

C) They should be put inside the box so the two ends join.

E) They should form loops outside of the box over the top, bottom, and sides of the box.

Answer 2

Answer:The correct answer is (a), (c) and (e).

Explanation:

Properties of magnetic field lines.

• They move from north to south when outside the magnet.
• They move from south to north when inside the magnet.
• They form closed loops with no breaks over the top, bottom and sides of the bar magnet.
• If lines are closer to each other strength of magnetic filed will be more.