CLASS 10 NOTES
SCIENCE
Magnetic Effects of
Electric Current
PRASHANT KIRAD
, PRASHANT KIRAD
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.
EMA
Magnetic field Lines:
Imaginary lines that depict the magnetic field are
observed when iron fillings are placed near a
D
magnet, forming a pattern that illustrates the
RA
arrangement of magnetic field lines.
● Magnetic field lines start at the North pole of a magnet
KI
and extend to the South pole outside the magnet. However
T
within the magnet, the direction is from South to North.
AN
● They create unbroken, closed curves.
● The tangent indicates the direction of the magnetic field
at any point on the magnetic field lines. JOSH METER?
H
● Magnetic field lines never intersect each other.
AS
● 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.
PR
The magnetic field is produced by a current flowing through a straight conductor.
Magnetic field lines form concentric circles
with the center at the wire.
The strength of the magnetic field increases
with an increase in current.
The strength of the magnetic field decreases
as we move away from the wire.
Maxwell's Right-Hand thumb Rule:
Maxwell's Right-Hand Thumb Rule helps you find the
direction of the magnetic field around a wire with
current. Point your thumb in the direction of the current,
and the way your fingers curl shows the magnetic field's
direction.
SCIENCE
Magnetic Effects of
Electric Current
PRASHANT KIRAD
, PRASHANT KIRAD
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.
EMA
Magnetic field Lines:
Imaginary lines that depict the magnetic field are
observed when iron fillings are placed near a
D
magnet, forming a pattern that illustrates the
RA
arrangement of magnetic field lines.
● Magnetic field lines start at the North pole of a magnet
KI
and extend to the South pole outside the magnet. However
T
within the magnet, the direction is from South to North.
AN
● They create unbroken, closed curves.
● The tangent indicates the direction of the magnetic field
at any point on the magnetic field lines. JOSH METER?
H
● Magnetic field lines never intersect each other.
AS
● 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.
PR
The magnetic field is produced by a current flowing through a straight conductor.
Magnetic field lines form concentric circles
with the center at the wire.
The strength of the magnetic field increases
with an increase in current.
The strength of the magnetic field decreases
as we move away from the wire.
Maxwell's Right-Hand thumb Rule:
Maxwell's Right-Hand Thumb Rule helps you find the
direction of the magnetic field around a wire with
current. Point your thumb in the direction of the current,
and the way your fingers curl shows the magnetic field's
direction.
