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Concept Maps
Magnetism and magnetic effects of electric current — Concept Maps
Tamil Nadu Board · Class 12 · Physics
3 concept maps of Magnetism and magnetic effects of electric current for Tamil Nadu Board Class 12 Physics, each also written out as a text outline.
45 questions31 flashcards5 formulas & key relations5 concepts
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3 Concept Maps
Complete Chapter Overview: Magnetism and Magnetic Effects of Electric Current
The map in words
- root((Magnetism and
- Magnetic Effects))
- Earth Magnetic Field
- Declination D
- Dip Inclination I
- Horizontal Component BH
- Special Cases
- Equator I=0
- Poles I=90
- Bar Magnet Properties
- Magnetic Moment pm=qm times 2l
- Magnetic Length 5/6 ratio
- Coulombs Law F=kqmAqmB/r2
- Axial Field Baxial=mu0 times 2pm/4pi times r3
- Equatorial Field Beq=mu0 times pm/4pi times r3
- Torque tau=pmB sin theta
- Potential Energy U=-pmB cos theta
- Magnetic Materials
- Diamagnetic
- Chi negative
- Bismuth Copper Water
- Meissner Effect
- Paramagnetic
- Chi small positive
- Aluminium Platinum
- Curie Law Chi=C/T
- Ferromagnetic
- Chi large positive
- Iron Nickel Cobalt
- Domains
- Curie-Weiss Law
- Hysteresis Loop
- Retentivity
- Coercivity
- Hard vs Soft magnets
- Diamagnetic
- Magnetic Properties
- Magnetising Field H
- Permeability mu and mur
- Magnetisation M
- Susceptibility Chim
- B=mu0 times H+M
- Biot-Savart Law
- dB=mu0 times Idl sin theta/4pi times r2
- Long Straight Wire B=mu0I/2pi times a
- Circular Coil B=mu0NI/2R at centre
- On Axis B=mu0NI/2 times R2/R2+z2 pow 3/2
- Right Hand Thumb Rule
- Maxwell Cork Screw Rule
- Tangent Galvanometer
- Current Loop as Dipole pm=IA
- Bohr Magneton muB
- Ampere Circuital Law
- Closed loop integral B.dl=mu0 I
- Long Wire B=mu0I/2pi times r
- Solenoid B=mu0nI inside
- Toroid B=mu0nI inside ring
- Lorentz Force
- Fm=qv times B
- Circular Motion r=mv/qB
- Cyclotron Period T=2pi times m/qB
- Cyclotron Frequency f=qB/2pi times m
- Velocity Selector v=E/B
- Cyclotron Device
- Forces on Conductors
- F=BIl sin theta
- Fleming Left Hand Rule
- Parallel Wires F/L=mu0I1I2/2pi times r
- Same direction Attract
- Opposite direction Repel
- Definition of Ampere
- Torque on Current Loop
- tau=NABI sin theta
- Moving Coil Galvanometer
- I=G theta G=K/NAB
- Current Sensitivity Is=NAB/K
- Voltage Sensitivity Vs=Is/Rg
- Ammeter low shunt parallel
- Voltmeter high resistance series
- Earth Magnetic Field
Chapter Overview: Magnetism and Magnetic Effects of Electric Current
The map in words
- Magnetism and Magnetic Effects
- Earths Magnetic Field
- Magnetic Declination D
- Magnetic Dip I
- Horizontal Component BH
- BH equals BE cos I
- BV equals BE sin I
- Bar Magnet Properties
- Magnetic Moment pm
- Coulombs Law
- Axial Field
- Equatorial Field
- Torque in Uniform Field
- Potential Energy
- Magnetic Materials
- Diamagnetic
- Negative Susceptibility
- Repelled by Field
- Example Bismuth Copper
- Paramagnetic
- Small Positive Susceptibility
- Curie Law
- Example Aluminium Oxygen
- Ferromagnetic
- Large Positive Susceptibility
- Domains
- Curie Weiss Law
- Example Iron Nickel Cobalt
- Hysteresis
- Retentivity
- Coercivity
- Soft and Hard Materials
- Diamagnetic
- Biot Savart Law
- Infinite Straight Wire B equals mu0I over 2pia
- Circular Coil Centre
- Tangent Galvanometer
- Current Loop as Dipole
- Ampere Circuital Law
- Solenoid B equals mu0nI
- Toroid
- Lorentz Force
- Force on Moving Charge
- Circular Motion r equals mv over qB
- Velocity Selector v equals E over B
- Cyclotron
- Force on Conductor
- F equals BIl sin theta
- Parallel Conductors
- Fleming Left Hand Rule
- Torque on Current Loop
- tau equals NIAB sin theta
- Moving Coil Galvanometer
- Ammeter and Voltmeter
- Earths Magnetic Field
Magnetism and Magnetic Effects - Comprehensive Concept Map
The map in words
- Magnetism
- Magnetic Field Fundamentals
- Earth's Magnetic Field
- Declination D
- Inclination I
- Horizontal Component BH
- Magnetic Dipole Moment
- Bar Magnet pm = qm × 2l
- Current Loop pm = IA
- Electron Orbit μL = eνR/2
- Magnetic Field Strength
- Definition: Force per unit pole
- Units: N A-1 m-1
- Field Lines Pattern
- Earth's Magnetic Field
- Magnetic Effects of Current
- Biot-Savart Law
- Straight Wire B = μ0I/2πa
- Circular Loop B = μ0IR²/2(R²+z²)³/²
- Solenoid B = μ0nI
- Toroid B = μ0NI/2πr
- Right Hand Rules
- Thumb Rule for Field
- Cork-screw Rule
- Ampère's Circuital Law
- ∮B·dl = μ0Ienclosed
- Applications to Symmetry
- Biot-Savart Law
- Motion in Magnetic Fields
- Lorentz Force
- Charged Particles F = q(v × B)
- Force on Conductor F = BIl
- Work and Power
- Circular Motion
- Radius r = mv/qB
- Period T = 2πm/qB
- Cyclotron Frequency f = qB/2πm
- Cyclotron Device
- Particle Acceleration
- Resonance Condition
- High Energy Physics
- Velocity Selector
- Crossed E and B Fields
- Speed Filter v = E/B
- Mass Spectrometry
- Lorentz Force
- Magnetic Materials
- Classification
- Diamagnetic χm < 0
- Repelled by fields
- Temperature Independent
- Examples Cu Au Bi
- Paramagnetic χm > 0 small
- Attracted to fields
- χm ∝ 1/T Curie's Law
- Examples Al O2 Pt
- Ferromagnetic χm >> 1
- Strongly Magnetized
- χm ∝ 1/(T-Tc) Curie-Weiss
- Examples Fe Co Ni
- Diamagnetic χm < 0
- Properties
- Permeability μ
- Susceptibility χm
- Magnetization M
- Hysteresis
- Loop Area = Energy Loss
- Remanence Residual Magnetism
- Coercivity Required Field
- Soft vs Hard Materials
- Classification
- Torque and Energy
- Magnetic Dipole
- Torque τ = pm × B = pmB sin θ
- Energy U = -pmB cos θ
- Alignment with Field
- Current Loop
- Torque τ = NIAB sin θ
- Motor Principle
- Electric Motor Operation
- Potential Energy
- Minimum at parallel θ = 0°
- Maximum at antiparallel θ = 180°
- Magnetic Dipole
- Measuring Instruments
- Tangent Galvanometer
- Principle B = BH tan θ
- Crossed Fields Method
- Current Measurement
- Moving Coil Galvanometer
- Principle I = Gθ
- Current Sensitivity Is = NAB/K
- Voltage Sensitivity Vs = Is/Rg
- Ammeter
- Shunt Resistance Parallel
- Low Resistance Needed
- For n× Multiplication S = Rg/(n-1)
- Voltmeter
- Series Resistance
- High Resistance Needed
- For n× Multiplication Rh = (n-1)Rg
- Tangent Galvanometer
- Magnetic Field Fundamentals
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What are the important topics in Magnetism and magnetic effects of electric current for Tamil Nadu Board Class 12 Physics?
Key topics in Magnetism and magnetic effects of electric current include Earth's Magnetic Field and Magnetic Elements, Basic Properties of Magnets and Coulomb's Law of Magnetism, Magnetic Field Due to a Bar Magnet (Axial and Equatorial), Torque on a Bar Magnet and Potential Energy. Study these first, then practise questions on each for the Tamil Nadu Board Class 12 board exam.
What do the concept maps for Magnetism and magnetic effects of electric current show?
The 3 maps show how the ideas in Magnetism and magnetic effects of electric current connect: Complete Chapter Overview: Magnetism and Magnetic Effects of Electric Current; Chapter Overview: Magnetism and Magnetic Effects of Electric Current. Each map is also written out as an outline on this page.
How should I revise Magnetism and magnetic effects of electric current for the Tamil Nadu Board Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Magnetism and magnetic effects of electric current. Revise definitions regularly and use flashcards for quick recall before the exam.
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