Advertisements
Advertisements
Question
Fill in the blank
The strength of the magnetic field of an electromagnet is increased by inserting a core of soft ______
Advertisements
Solution
The strength of magnetic field of an electromagnet is increased by inserting a core of soft iron.
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
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
An electromagnet is used in
Select the correct alternative
The purpose of armature in an electric bell is
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer.
