- 14 Sections
- 136 Lessons
- 52 Weeks
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- CHAPTER 1: Electric Charges and Fields10
- 2.01 Electric Charges Conductors and Insulators Charging By Induction
- 2.12 Basic Properties of Electric Charges and Coulomb’s Law
- 2.23 Electric Field Electric Field Lines Continuous Charge Distribution
- 2.34 Electric Dipole _ Dipole in a Uniform External Field
- 2.45 Electric Flux Gauss Law
- 2.56 Applications of Gauss Law
- 2.6Multiple Choice Questions
- 2.7Filling the Blank Type Questions
- 2.8True or False Type Questions
- 2.9Matching Type Questions
- CHAPTER 2: Electrostatic Potential and Capacitance11
- 3.01 Electrostatic Potential Energy _ Electrostatic Potential
- 3.12 Potential Due To an Electric Dipole
- 3.23 Equipotential Surfaces _ Potential due to a System of Charges
- 3.34 Potential Energy in an External Field
- 3.45 Electrostatics of Conductors _ Dielectrics and Polarisation
- 3.56 Capacitors and capacitance
- 3.67 Combination of Capacitors Energy Stored in a Capacitor
- 3.8Multiple Choice Questions
- 3.9Filling the Blank Type Questions
- 3.10True or False Type Questions
- 3.11Matching Type Questions
- Chapter 3: Current Electricity12
- 4.01 Electric Current Ohm_s Law
- 4.12 Drift of Electrons Limitations of Ohm_s Law
- 4.23 Resistivity of Various Materials
- 4.34 Temperature Dependence of Resistivity
- 4.45 Electric Energy Electric Power Combination of resistors
- 4.56 Cell, Emf, Internal Resistance Cells in Series and Parallel
- 4.67 Kirchhoff_s Rules Wheatstone bridge Meter Bridge
- 4.78 Potentiometer
- 4.8Multiple Choice Questions
- 4.9Filling the Blank Type Questions
- 4.10True or False Type Questions
- 4.11Matching Type Questions
- Chapter 4: Moving Charges and Magnetism12
- 5.01 Magnetic Force
- 5.12 Motion in a Magnetic Field _ Motion in Combined Electrical and Magnetic Fields
- 5.23 Magnetic Field Due to Current Element, Biot-Savart Law Magnetic Field on the Axis of a Circular Current Loop
- 5.34 Ampere_s Circuit Law
- 5.45 Solenoid and Toroid _ Force Between two Parallel Currents
- 5.56 Torque on Current Loop
- 5.67 Circular Current Loop as a Magnetic Dipole
- 5.78 Moving Coil Galvanometer
- 5.8Multiple Choice Questions
- 5.9Filling the Blank Type Questions
- 5.10True or False Type Questions
- 5.11Matching Type Questions
- Chapter 5: Magnetism and Matter11
- 6.01 The Bar Magnet
- 6.12 Dipole in a Uniform Magnetic Field The Electrostatic Analogue
- 6.23 Magnetism and Gauss Law
- 6.34 Earth_s Magnetism
- 6.45 Magnetisation and Magnetic Intensity
- 6.56 Magnetic Properties of Materials
- 6.67 Permanent Magnets and Electromagnets
- 6.7Multiple Choice Questions
- 6.8Filling the Blank Type Questions
- 6.9True or False Type Questions
- 6.10Matching Type Questions
- Chapter 6: Electromagnetic Induction11
- 7.01 Experiments of Faraday and Henry Magnetic Flux _ Faraday_s Law of Induction
- 7.12 Lenz Law and Conservation of Energy
- 7.23 Motional Electromotive Force
- 7.34 Energy Consideration
- 7.45 Eddy Currents
- 7.56 Inductance
- 7.67 AC Generator
- 7.7Multiple Choice Questions
- 7.8Filling the Blank Type Questions
- 7.9True or False Type Questions
- 7.10Matching Type Questions
- Chapter 7: Alternating Current4
- Chapter 8: Electromagnetic Waves7
- Chapter 9: Ray Optics and Optical Instruments14
- 10.01 Reflection of Light by Spherical Mirror
- 10.12 Refraction
- 10.23 Total Internal Reflection
- 10.34 Refraction at a Spherical Surface
- 10.45 Power of Lens _ Combination of Thin Lenses in Contact
- 10.56 Refraction through a Prism
- 10.67 Dispersion through a Prism
- 10.78 The Eye
- 10.89 Microscope
- 10.910 Telescope
- 10.10Multiple Choice Questions
- 10.11Filling the Blank Type Questions
- 10.12True or False Type Questions
- 10.13Matching Type Questions
- Chapter 10: Wave Optics9
- 11.01 Huygens_ Principle
- 11.12 Doppler Effect _ Coherent and Incoherent Addition of Waves
- 11.23 Interference of Light Waves and Young_s Experiment
- 11.34 Diffraction
- 11.45 Polarisation
- 11.5Multiple Choice Questions
- 11.6Filling the Blank Type Questions
- 11.7True or False Type Questions
- 11.8Matching Type Questions
- Chapter 11: Dual Nature of Radiation and Matter9
- 12.01 Electron Emission and Photoelectric Effect
- 12.12 Wave Theory of Light _ Energy Quantum of Radiation
- 12.23 Particle Nature of Light The Photon
- 12.34 Wave Nature of Matter
- 12.45 Davisson and Germer Experiment
- 12.5Multiple Choice Questions
- 12.6Filling the Blank Type Questions
- 12.7True or False Type Questions
- 12.8Matching Type Questions
- Chapter 12: Atoms8
- Chapter 13: Nuclei9
- Chapter 14: Semi Conductor Electronics9
- 15.01 Classification of Metals, Conductors, and Semi-conductors
- 15.12 Intrinsic Semi-conductor
- 15.23 Extrinsic Semi-conductor
- 15.34 Diodes _ Rectifiers
- 15.45 Special Purpose p-n Junction Diodes
- 15.9Multiple Choice Questions
- 15.10Filling the Blank Type Questions
- 15.11True or False Type Questions
- 15.12Matching Type Questions
3 Magnetism and Gauss Law
Magnetism and Gauss Law
- Statement − The net magnetic flux (ΦB) through any closed surface is always zero.
- This law suggests that the number of magnetic field lines leaving any closed surface is always equal to the number of magnetic field lines entering it.
- Suppose a closed surface S is held in a uniform magnetic field
.
Consider a small vector area element 
of this surface.
Magnetic flux through this area element is defined as 
Considering all small area elements of the surface, we obtain net magnetic flux through the surface as:
Compare this with the Gauss law of electrostatics.
The difference between the Gauss law of magnetism and electrostatics is that magnetic monopole doesn’t exist.