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प्रश्न
The most suitable material for making the core of an electromagnet is:
(a) soft iron
(b) brass
(c) aluminium
(d) steel
उत्तर
soft iron
The most suitable material for making the core of an electromagnet is soft iron because its use as a core in a solenoid produces strongest magnetism.
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संबंधित प्रश्न
State the factors on which the strength of an electromagnet depends. How does it depend on these factors?
Consider the energy density in a solenoid at its centre and that near its ends. Which of the two is greater?
Draw a labelled diagram to show how an electromagnet is made.
Why soft iron is preferred to be used as the core of the electromagnet of an electric bell?
You have been provided with a solenoid AB.
(i) What is the polarity at end A?
(ii) Give one advantage of an electromagnet over a permanent magnet.
The energy stored in a 50 mH inductor carrying a current of 4 A is ______
A metal plate can be heated by ______.
If the sun radiates energy at the rate of 3.6 × 1033 ergs/sec the rate at which the sun is loosing mass is given by ______.
