short summary of Chapter : Magnetic effect of electric current
Answers
magnet is a material that produces a field that attracts or repels other such materials of magnetic nature.
Lodestone is a naturally occurring magnet. It attracts materials like Iron, Nickel, Cobalt, etc.
CBSE Notes Class 10 Science Chapter 13-1
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North and South Poles
A magnet is always bipolar with poles named north and south poles. These two poles always exist together and can not be separated. North pole of a magnet is the side which points to Earth’s geographic north when it is freely suspended.
Like poles repel and unlike poles attract
Similar to charges, poles attract and repel. Like poles repel while unlike poles attract each other.
Bar magnet
A bar magnet is a rectangular object, composed of iron, steel or any form of a ferromagnetic substance, that shows permanent magnetic properties. It has two different poles, a north and a south pole such that when suspended freely, the north pole aligns itself towards the geographic north pole of the Earth.
Magnetic field
The region around a magnet where its magnetic influence can be experienced is called a magnetic field.
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Magnetic effect of electric current :
A current carrying straight conductor has magnetic field in the form of concentric circles, around it. Magnetic field of current carrying straight conductor can be shown by magnetic field lines. The direction of magnetic field through a current carrying conductor depends upon the direction of flow electric current.