When an iron nail or a rod is placed in a current carrying coil, it becomes a magnet. This is known as……………..
a) temporary magnet
b) permanent magnet
c) electromagnet
d) none of these
The flow of current in an electric circuit is controlled by:
a) bulb
b) copper wire
c) switch
d) rubber
Current can easily pass through ………
a) steel paper clip
b) glass strip
c) plastic comb
d) wooden spoon
How many poles are there of a ring shaped magnet?
a) 1
b) 2
c) 3
d) 4
A freely suspended bar magnet always stays along…………..
a) East-west direction
b) north-south direction
c) any direction
d) keeps oscillating
