Fun With Magnets
|Magnets come in various shapes. Can you name those shown?|
(Answers given below?)
Q1: In a bar magnet, magnetic power is
(a) more that both ends of the magnet.
(b) more in the middle of the magnet.
(c) is same through the magnet.
(d) none of these
Q2(NCERT): A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filling clinging to the
(a) North pole is almost equal to the south pole.
(b) North pole is much more than the south pole.
(c) North pole is much less than the south pole.
(d) Magnet will be same all along its length.
Q3: When a magnet is suspended freely in air with the help of string, it aligns itself in _________ direction.
Q5: Which of the following is a non-magnetic material?
Q6: Usually the North Pole of a magnetic needle is painted ______.
Q7: According to Law of Magnets "Unlike poles ________ each other and like poles _______ each other".
(a) repel, attract
(b) attract, attract
(c) attract, repel
(d) repel, repel
Q8: When a North pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, then it _______ each other.
(c) neither attracts nor repels
(d) none of these
Q9: Which of the following action will NOT make a magnet loose its magnetic properties?
(a) Drop a magnet from height
(b) Hammer a magnet
(c) Pass Electric current from a current
(d) Heat a magnet
Q10: Which of the following is a natural magnet?
1: (a) more that both ends of the magnet.
2: (a) North pole is almost equal to the south pole.
3: (d) North-South
4: (d) North-South
5: (b) Wood
6: (a) red
7: (c) attract, repel
8: (b) repels
9: (c) Pass Electric current from a current
10: (b) Magnetite
Shapes of Magnets:
(a) Bar magnet
(b) Horse shoe (or U-shaped) magnet
(c) Magnetic needle
(d) Ring magnets
(e) Cylindrical magnets