NEW
Font size
WorksheetsElectromagnet
Total questions: 10
Worksheet time: 4mins
Which statement is true?
I. All electromagnets are permanent magnets.
II. Increasing the number of coils in an electromagnet decreases it strength.
III. Increasing the batteries increases the strength of an electromagnet.
Both I and II
Which can increase the strength of an electromagnet?
increasing the number of coils around the nail
increasing the number of batteries
making the core bigger
all of the above
Which of the electromagnets would have the greatest magnetic field?
Which of the following is NOT part of an electromagnet?
wire
core
battery
needles
It is a kind of magnet that works only when there is a flow of electricity.
Electromagnet
Bar Magnet
Horse Shoe Magnet
Magnetite
Which appliance does NOT use electromagnet?
telephone
television
radio
broom
Which is NOT made of electromagnet?
cooking pan
transformer
generator
motor
Which of these forces can be used in a motor?
magnetism
wind
friction
gravity
Electromagnets are ___________________.
permanent
instant
temporary
stable
Which makes an electromagnet work?
needle
electricity
pin
thumbtacks
