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Study Material for Class 12 Physics Chapter 5 Magnetism and Matter
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Class 12 Physics Chapter 5 Magnetism and Matter
CBSE Class 12 Physics Magnetic Effects Of Current And Magnetism chapter notes and important questions. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations. Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.
MAGNETIC EFFECTS OF CURRENT AND MAGNETISM
GIST
1. Magnetic field:
It is a region around a magnet or current carrying conductor in which its magnetic influence an be felt by a magnetic needle.
2. Biot-Savart Law
dB =μ0 IdlSinθ/4πr2
μ0 =4π x 10-7 Tm/A
*Direction of dB can be found by using Maxwell’s Right hand thumb rule.+
3. Applications :
Magnetic field at a centre of a current carrying circular coil B= μ0 I/2a
Magnetic field at a point on the axis of current carrying coil. B= μ0 Nia2/2(a2+x2)3/2
(N=no.of turns in the coil)
4. Ampere’s circuital law
It states that the line integral of magnetic field around any closed path in vacuum/air is μ0 times the total current threading the closed path.
5. Applications
i) Magnetic field due to straight infinitely long current carrying straight conductor.
B= μ0 I/2πr
ii) Magnetic field due to a straight solenoid carrying current B= μ n In= no. of turns 0
per unit length
iii) Magnetic field due to toroidal solenoid carrying current.
B= μ0 N I / 2πr
N= Total no. of turns.
Please click the link below to download CBSE Class 12 Physics Magnetic Effects Of Current And Magnetism chapter notes and important questions.
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CBSE Class 12 Physics Chapter 5 Magnetism and Matter Study Material
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