Unit 2. electricity and magnetism

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Electric charges and fields

1 Electric charge

2 Conductors, insulators, and charging by induction

2.1 Conductors and insulators

2.2 Charging by induction

2.4 Conceptual questions

3 Coulomb's law

4 Electric field

5 Calculating electric fields of charge distributions

6 Electric field lines

6.2 Conceptual questions

7 Electric dipoles

1 Electric flux

2 Explaining gauss’s law

3 Applying gauss’s law

4 Conductors in electrostatic equilibrium

4.1 The electric field inside a conductor vanishes

4.2 Charge on a conductor

4.3 The electric field at the surface of a conductor

4.5 Key equations

4.6 Conceptual questions

4.8 Additional problems

4.9 Challenge problems

Electric potential

1 Electric potential energy

2 Electric potential and potential difference

3 Calculations of electric potential

4 Determining field from potential

5 Equipotential surfaces and conductors

6 Applications of electrostatics

1 Capacitors and capacitance

2 Capacitors in series and in parallel

2.1 The series combination of capacitors

2.2 The parallel combination of capacitors

2.4 Conceptual questions

3 Energy stored in a capacitor

3.2 Conceptual questions

4 Capacitor with a dielectric

5 Molecular model of a dielectric

Current and resistance

1 Electrical current

1.1 Defining current and the ampere

1.2 Current in a circuit

1.4 Conceptual questions

2 Model of conduction in metals

3 Resistivity and resistance

3.1 Resistivity

3.2 Temperature dependence of resistivity

3.5 Material and shape dependence of resistance

3.7 Conceptual questions

5 Electrical energy and power

6 Superconductors

Direct-current circuits

1 Electromotive force

2 Resistors in series and parallel

2.1 Resistors in series

2.2 Resistors in parallel

2.3 Combinations of series and parallel

2.4 Practical implications

2.6 Conceptual questions

3 Kirchhoff's rules

4 Electrical measuring instruments

6 Household wiring and electrical safety

6.1 Thermal hazards

6.2 Shock hazards

6.3 Electrical safety: systems and devices

6.5 Key equations

6.6 Conceptual questions

6.8 Additional problems

6.9 Challenge problems

Magnetic forces and fields

1 Magnetism and its historical discoveries

2 Magnetic fields and lines

2.1 Defining the magnetic field

2.2 Representing magnetic fields

2.4 Conceptual questions

3 Motion of a charged particle in a magnetic field

3.2 Conceptual questions

4 Magnetic force on a current-carrying conductor

4.1 Magnetic fields produced by electrical currents

4.2 Calculating the magnetic force

4.4 Conceptual questions

5 Force and torque on a current loop

6 The hall effect

6.2 Conceptual questions

7 Applications of magnetic forces and fields

Sources of magnetic fields

1 The biot-savart law

1.2 Conceptual questions

2 Magnetic field due to a thin straight wire

3 Magnetic force between two parallel currents

4 Magnetic field of a current loop

5 Ampère’s law

6 Solenoids and toroids

7 Magnetism in matter

7.1 Paramagnetic materials

7.2 Diamagnetic materials

7.3 Ferromagnetic materials

7.5 Key equations

7.6 Conceptual questions

7.8 Additional problems

7.9 Challenge problems

Electromagnetic induction

1 Faraday’s law

1.2 Conceptual questions

4 Induced electric fields

5 Eddy currents

6 Electric generators and back emf

7 Applications of electromagnetic induction

7.2 Key equations

7.3 Additional problems

7.4 Challenge problems

1 Mutual inductance

2 Self-inductance and inductors

3 Energy in a magnetic field

5 Oscillations in an lc circuit

6 Rlc series circuits

Alternating-current circuits

2 Simple ac circuits

3 Rlc series circuits with ac

4 Power in an ac circuit

5 Resonance in an ac circuit

Electromagnetic waves

1 Maxwell’s equations and electromagnetic waves

2 Plane electromagnetic waves

3 Energy carried by electromagnetic waves

4 Momentum and radiation pressure

5 The electromagnetic spectrum

5.1 Radio waves

5.3 Infrared radiation

5.4 Visible light

5.5 Ultraviolet radiation

5.9 Key equations

5.10 Conceptual questions

5.12 Additional problems

5.13 Challenge problems

Source: OpenStax, University physics volume 2. OpenStax CNX. Oct 06, 2016 Download for free at http://cnx.org/content/col12074/1.3

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