What is the direction of magnetic field lines outside a bar-magnet?

CBSE Class 10 CBSE Class 10 Science
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1

Answer the following questions:

  1. What is the direction of magnetic field lines outside a bar-magnet?
  2. The magnetic field lines in a given region are getting crowded. What does it indicate?
  3. State one advantage of AC over DC.

Answer:

  1. North pole to south pole.
  2. The strength of magnetic field is higher in this region.
  3. A.C. voltage can be stepped up and transmitted over long distances without much loss of energy.