Why pieces of paper are not attracted by a magnet?
Because paper is not a magnetic substance
Because paper is not sticky
Because paper is not strong
Because paper is a magnetic substance
Which of the following is called suspension train?
None of this
Every magnet irrespective of its shape has
Both south poles
Both north and south poles
Both north poles
Can't be predicted
A freely suspended magnet come to rest always in the
North- south direction
North - east direction
East - west direction
Are used in dynamos and generators
Are used in the construction of toys
Are utilized by making magnetic compass
Possess all the above three properties
Magnetic lines of force
Are closed and continuous curves
Travel in E-W direction
Always intersect each other
Possess all of these properties.
Which of the following is a natural magnet?
Temporary magnets are made from
Artificial magnets can be
Both a and b
None of these
If the amount of current passing through the coil is increased ,then the strength of the electromagnet
First increases then decreases