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प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Write true or false for a given statement.
An electric bell uses an electromagnet.
Fill in the blank
An electromagnet is used to separate large mass of ______ scrap.
Select the correct alternative
The purpose of armature in an electric bell is
Name the material of an electromagnet?
You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two ways by which the strength of the magnetic field of an electromagnet can be increased?
State two common uses of electromagnets ?
Name a domestic device in which an electromagnet is used ?
Describe the construction and working of an electric bell with the help of a diagram.
