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प्रश्न
What is an artificial magnet? State two reasons why do we need artificial magnets .
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उत्तर
An artificial magnet is a magnetized piece of iron (or other magnetic material). Artificial magnets are required because natural magnets have odd and irregular shape and they are not magnetically very strong. Artificial magnets can be given desired shape and made very strong.
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संबंधित प्रश्न
The strength of the magnetic field between the poles of an electromagnet would be unchanged if:
The magnetic field inside a long straight solenoid carrying current ______.
Describe two methods of determining the arrangement of the lines of force in the field close to a bar magnet. Give a brief explanation of each method.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
Magnetic field lines determine ______.
A closely wounded circular coil of radius 5 cm produces a magnetic field of 37.68 × 10-4 T at its center. The current through the coil is ______ A. [Given, number of turns in the coil is 100 and π = 3.14)
