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What is an electromaget?
An electromagnet is made by wrapping many coils of copper wire round an iron bar. When electricity is send along the coiled wires, the iron bar becomes magnetised until the electricity is switched off.
Why is a iron bar placed in a solenoid?
An iron bar is placed in a solenoid to increase the magnetic field strength produced by the solenoid. The iron bar becomes magnetized by the solenoid's magnetic field, enhancing the overall magnetic effect. This is commonly used in devices like electromagnets to amplify their magnetic strength.
How much poles does a magnetic bar have?
A magnetic bar has two poles: a North pole and a South pole.
Why horseshoe magnet be stored with bar of soft iron across the poles?
the tiny magnets or domain at end of magnets are not perfectly align and if we keep it the magnetic strength gets weaker and weaker so by attaching bar of soft iron opposite poles induces on it and this will keep the tiny magnets at the end align.
How can you tell the difference between a bar of iron a bar of copper and a magnet?
You can differentiate between a bar of iron and a bar of copper by testing their magnetic properties - iron is attracted to magnets, while copper is not. A bar magnet will attract small iron objects, while a bar of copper will not be attracted.
How do you magnetise a iron bar?
If you wrap a length of wire around the iron bar then pass a current through the wire, the bar will become magnetised.
What is an electromaget?
An electromagnet is made by wrapping many coils of copper wire round an iron bar. When electricity is send along the coiled wires, the iron bar becomes magnetised until the electricity is switched off.
How do the iron filings behave when sprinkled over the bar or horseshoe magnet?
The iron filings align along the magnetic field lines when sprinkled over a bar or horseshoe magnet. This creates a visual representation of the magnetic field around the magnet. The filings cluster at the poles of the magnet where the magnetic field is strongest.
Can a steel bar be magnetised by double stroke?
Short Answer: Yes. Long Answer: Yes.
Why is a iron bar placed in a solenoid?
An iron bar is placed in a solenoid to increase the magnetic field strength produced by the solenoid. The iron bar becomes magnetized by the solenoid's magnetic field, enhancing the overall magnetic effect. This is commonly used in devices like electromagnets to amplify their magnetic strength.
What is a pole on a magnet?
The poles of a magnet are the ends of the core of the magnet, where the lines of force emerge. An experiment with iron filings shows the lines of force, by putting a sheet of paper over the magnet and sprinkling fine iron filings. This is an easy thing to do at home. For a bar magnet the poles will be at opposite ends. If you have two such magnets you can experiment and find that like poles repel, opposite poles attract.
What is the tendency of iron filings concentrates on the north and south poles?
becouse at north &south poles the pole strength is more than other part of bar magnet so attraction is also more at poles Theoretically, magnet's lines of force - as evinced by the iron filings - encompases all universe, but, nonetheless, they meet together at the magnet's poles
How much poles does a magnetic bar have?
A magnetic bar has two poles: a North pole and a South pole.
What do you call a bar magnet which doesn't have poles?
Without poles, it's not a magnet. It's just a bar. All magnets have north and south poles.
Why horseshoe magnet be stored with bar of soft iron across the poles?
the tiny magnets or domain at end of magnets are not perfectly align and if we keep it the magnetic strength gets weaker and weaker so by attaching bar of soft iron opposite poles induces on it and this will keep the tiny magnets at the end align.
Where are the poles of a disc magnet located?
It depends on the magnet, most of them have poles on the flat faces, but some magnets are magnetised on the outside diameter. this means that if you draw a line across the flat face, the south pole is on one side and the north pole on the other side
Is a iron bar a insulator or a conductor?
A iron bar is a conductor
