Isha works as a ship inspector. She often uses a small device that tests the structures of metal
panels. Her gauge (meter) breaks and out of it two bar magnets fall. Isha investigates the polarities of
the two permanent magnets so she can fix the gauge. When the two magnets are placed on a sheet of
paper as shown in Diagram, Isha feels an attraction between the magnets.
(i)Name a metal/alloy that is suitable to produce a permanent magnet.
(ii) What conclusion can she draw about the polarities of A and B?
(iii) Isha places a small plotting compass between the two magnets and draws the field lines on
the sheet of paper. The arrow of the compass always points towards A. What is the polarity of A and
B?
(a) A = ………………………………..… B = …………………………………………
Answers
Answer:
Isha works as a ship inspector. She often uses a small device that tests the structures of metal
panels. Her gauge (meter) breaks and out of it two bar magnets fall. Isha investigates the polarities of
the two permanent magnets so she can fix the gauge. When the two magnets are placed on a sheet of
paper as shown in Diagram, Isha feels an attraction between the magnets.
(i)Name a metal/alloy that is suitable to produce a permanent magnet.
(ii) What conclusion can she draw about the polarities of A and B?
(iii) Isha places a small plotting compass between the two magnets and draws the field lines on
the sheet of paper. The arrow of the compass always points towards A. What is the polarity of A and
B?
(a) A = ………………………………..… B = …………………………………………