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Question
Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.
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Solution 1
The strength of the magnetic field of an electromagnet depends on:
- Number of turns: The strength of the magnet increases with the number of turns of the winding in the solenoid.
- Current: The strength of the magnetic field increases with increasing current through the solenoid.
Solution 2
Factors on which the strength of the magnetic field of an electromagnet depends are:
- The number of turns in the solenoid. If the number of turns in the solenoid increases or decreases, the magnetic intensity also increases or decreases.
- It is directly proportional to the strength of the current that flows in the turns of the solenoid.
- It is found to increase further if a soft iron piece, called core, is placed along the axis of the solenoid inside it.
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