Ch 12 Magnetic Effects of Electric Current for class 10
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Module
Science Ch 12 class 10
Institution
Book
NCERT Solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current
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Hans Christian Oersted found that if you put a compass
next to a wire with an electric current flowing through it,
the needle in the compass would move. He thought this
happened because the electric current created a magnetic
field, which caused the compass needle to deflect.
Magnetic fields:
The region around a magnet where a magnetic force is felt is called the
magnetic field. It's a vector quantity, and its unit in the International
System of Units (SI) is the tesla.
Magnetic field Lines:
Imaginary lines that depict the magnetic field are
observed when iron fillings are placed near a
magnet, forming a pattern that illustrates the
arrangement of magnetic field lines.
● Magnetic field lines start at the North pole of a magnet
and extend to the South pole outside the magnet.
However, within the magnet, the direction is from South
to North.
● They create unbroken, closed curves.
● The tangent indicates the direction of the magnetic field at any point on
the magnetic field lines.
● Magnetic field lines never intersect each other.
● When magnetic field lines are closely spaced, the magnetic field is
stronger. Conversely, the magnetic field is weaker if the field lines are
spaced farther apart.
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