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WorksheetsElectromagnet
Total questions: 10
Worksheet time: 5mins
What are electromagnets?
Magnets through which current can pass
Magnets made by electricity
Magntes that can make electricity
Magnets that creates current
What is the core of an electromagnet made of?
Magnet
Iron
any magnetic material
earth's core
Magnetism is an example of
magnets
Study of magnets
non-contact force
contact force
How do we make the electromagnets stronger?
Using bigger magnets.
Increasing current
decreasing current
Making larger magnets.
How do we make the electromagnets stronger?
Using bigger magnets.
Using magnetic poles
Increasing number of coils
Decreasing number of coils
What is the relation between strength of magnet and current?
Higher current weaker magnet
Lower current stronger magnet
strength does not depend on current.
Higher current stronger magnet
What is the relation between strength of magnet and coils?
Higher the number of coils, weaker the magnet
Higher the number of coils, stronger the magnet
strength does not depend on number of coils
Higher number of magnets, stronger the coils.
Electromagnets are ---------------------------
controllable
Uncontrollable
Natural magnets
Electronic magnets
An electromagnet can be easily demagnetized by ------------------
Heating
using a magnet
switching off the current.
using a non magnetic material
Electromagnets were first discovered in the 19th century by Danish scientist -----------------
David Humphry
Daniel Magneto
Albert Einstein
Hands Christian Orsted.
