MAGNETISM

Magnetic Force on Moving Charged Particles in uniform magnetic field line

MAGNETIC FIELD

Magnetic Force on a current carrying conductor in a uniform magnetic field

Motion of charged particle in magnetic field line and electric field

Magnetic Field Produce by current-carrying conductor

Magnetic Force Between Two Parallel Current Carrying Conductors

Torque on a coil

A region around a magnet where a magnetic force can be experienced

Have two plates

North

South

Same Poles repel each other

Opposite pole attract each other

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Sources of magnetic field

Magnet

Magnetic field on earth

Current Carrying Conductor

Magnetic field line

Line to present Magnetic Field

Magnetic field lines leave the north pole and enters the south pole of a magnet

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Magnetic Field Line Pattern

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Magnetic flux density , B

Defined as magnetic flux per unit area across an area at right angles to the magnetic field

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Direction of magnetic field around the wire or coil

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Thumb=Current

Others=Mgnetic field lines

STRAIGHT CONDUCTOR image00

CIRCULAR COIL

B=µoIN/2R

SOLENOID

B=µoIN/l

NEGATIVELY CHARGED

POSITIVELY CHARGE PATICLES

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F=qvBsinθ

Stationary electric charged in a magnetic field will not experience a magnetic force . But if the charged is moving with a velocity in a magnetic field then it will experience a magnetic force

When a current carrying conductor is placed in a magnetic field thus a magnetic force will acts on that conductor

F=IIBsinθ

Fleming’s-Left-Hand-Rule

Current same direction=2 conductors are attrat

Current different direction=2 conductors are repel

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Angle between vector area A and B

Angle between the plane of the coil and B

τ=NIABsinθ

NIABsinφ

MAXIMUM

sin90 / cos 0

τmax=NIAB.

v=E/B

Fb=Fc

Consider a postively charged particle with mass , charged , and velocity enters a region of space where the electric and magnetic field are perpendicular to the particles velocity and to each other as shown in figure below download (3)