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Sagot :
Answer:
You can add more coils on top of the first row, and this just adds more field strength. In technical terms, every coil of wire increases the "magnetic flux density" (strength) of your magnet. The magnetic field on the outside of the coil resembles a bar magnet.
Explanation:
The magnetic field will increase if the magnetic strength of the magnet increased.
What are magnetic field lines?
The imaginary lines of forces which starts from the positive charged side of the magnet and ends on the negative side.
The magnetic field of an electromagnet is due to the magnetic field produced due to solenoid and the core of the electromagnet.
Since, the magnetic field of solenoid is given by B=μ₀ NI
Magnetic field increases when current in the wire of electromagnet increases. The number of loops can also be increased to increase the magnetic field strength.
Thus, Magnetic field lines will get more closer and strength will be increased.
Learn more about magnetic field lines.
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