1. Basic Circuit Elements
- 1.1. Active Circuit Elements
- 1.2. Passive Circuit Elements
2. Resistance
- 2.1. Resistance: Circular Wires
- 2.2. Temperature Effect
- 2.3. Resistor
- 2.4. Color coding and Standard Resistor Values
- 2.5. Ohmmeter
- 2.6. Resistance: Metric Units
3. Ohms Law, Power and Energy
- 3.1. Energy
- 3.2. Power
- 3.3. Efficiency
4. Series DC Circuits
- 4.1. Series Circuit
- 4.2. Circuit Instrumentation
- 4.3. Series Circuit Power Distribution
- 4.4. Series Voltage Sources
- 4.5. Kirchhoffs Voltage Law
- 4.6. Voltage Division in a Series Circuit
- 4.7. Interchanging Series Elements
- 4.8. Circuit Analysis Notation
- - 4.8.1. Single and Double Subscript Notation
- 4.9. Internal Resistance of Voltage Sources
- 4.10. Voltage Regulation
- 4.11. Loading Effects of Instruments
5. Parallel DC Circuits
- 5.1. Parallel Circuits
- 5.2. Power Distribution
- 5.3. Kirchhoffs Current law
- 5.4. Current Divider Rule
- 5.5. Voltage Sources in Parallel
- 5.6. Open and Short Circuits
- 5.7. Voltmeter Loading Effect
- 5.8. Troubleshooting Techniques
- 5.9. Applications
6. Series Parallel Circuits
- 6.1. Reduce and Return Approach
- 6.2. Block Diagram Approach
- 6.3. Ladder Networks
- 6.4. Voltage Divider Supply (Loaded and Unloaded)
- 6.5. Potentiometer Loading
- 6.6. Iron Vane Movement
7. Methods of Analysis
- 7.1. Current Sources
- 7.2. Branch Current Analysis
- 7.3. Mesh Analysis
- 7.4. Mesh Analysis with Current Sources
- 7.5. Nodal Analysis
- 7.6. Nodal Analysis with Voltage Sources
- 7.7. Bridge Networks
- 7.8. Wye Delta Transformation
8. Network Theorems
- 8.1. Linearity Property
- 8.2. Superposition Theorem
- 8.3. Thevenins Theorem
- 8.4. Nortons Theorem
- 8.5. Maximum Power Transfer Theorem
- 8.6. Millmans Theorem
- 8.7. Substitution Theorem
- 8.8. Reciprocity Theorem
- 8.9. Application of Maximum Power Transfer Method
9. Capacitors
- 9.1. Capacitance
- 9.2. Types of capacitor
- 9.3. Capacitor Charging Phase
- 9.4. Capacitor Discharging Phase
- 9.5. Initial Conditions
- 9.6. Instantaneous Values
- 9.7. Thevenin Equivalent Circuit
- 9.8. The Current iC
- 9.9. Capacitors in series and parallel
- 9.10. Energy Stored by a Capacitor
- 9.11. Stray Capacitance
10. Magnetic Circuits
- 10.1. Magnetic Flux Density
- 10.2. Permeability
- 10.3. Magnetic Reluctance
- 10.4. Ohms Law for Magnetic Circuits
- 10.5. Magnetizing Force
- 10.6. Hysteresis Curve
- 10.7. Domain Theory of Magnetism
- 10.8. Amperes Circuital Law
- 10.9. Series Magnetic Circuits
- 10.10. Magnetic Circuit Air Gaps
- 10.11. Series Parallel Magnetic Circuits
- 10.12. Application of Magnetic circuits
11. Inductors
- 11.1. Faradays Law of Induction
- 11.2. Lenz law
- 11.3. Self Inductance
- 11.4. Types of Inductors
- 11.5. Standard Values and Recognition Factor
- 11.6. Induced Voltage
- 11.7. RL Transients (storage cycle)
- 11.8. Initial Values
- 11.9. RL Transients (decay cycle)
- 11.10. Thevenin Equivalent Circuit of Inductor
- 11.11. Inductors in Series and Parallel
- 11.12. RL and RLC Circuits with DC Inputs
- 11.13. Energy Stored by an Inductor
- 11.14. Application of inductors
12. Sinusoidal Alternating Waveforms
- 12.1. Sinusoidal AC Voltage Generation
- 12.2. Sinusoidal AC Waveform Definitions
- 12.3. The Sine Wave
- 12.4. General Format for the Sinusoidal Voltage or Current
- 12.5. Sinusoidal Waveforms Phase Relations
- 12.6. Average Value
- 12.7. Effective or Root Mean Square (rms) Values
- 12.8. AC meters and Instruments
13. The Basic Elements and Phasors
- 13.1. The Derivative
- 13.2. Response of Resistor to a Sinusoidal Voltage
- 13.3. Response of Inductor to a Sinusoidal Voltage
- 13.4. Response of Capacitor to a Sinusoidal Voltage
- 13.5. Frequency Effects on L and C in DC Circuits
- 13.6. Frequency Response of the Basic Elements
- 13.7. Sinusoidal Voltage Average Power
- 13.8. AC Power Factor
- 13.9. Complex Numbers
- 13.10. Phasors
14. Series and Parallel ac Circuits
- 14.1. Impedance and the Phasor Diagram
- 14.2. AC Series Configuration
- 14.3. AC Circuits Voltage divider rule
- 14.4. Frequency Response of the RC Circuit
- 14.5. SUMMARY of Series ac Circuits
- 14.6. Admittance and Susceptance

Magnetic Flux Density

Electrical Circuit Analysis > Magnetic Circuits

Nikola Tesla

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Nikola Tesla

Inventor, Electrical Engineer, Mechanical Engineer

July 9/10, 1856 - January 7, 1943

Often regarded as one of the most innovative and inventive individuals in the history of the sciences. He was the first to introduce the alternating-current machine, removing the need for commutator bars of dc machines. After emigrating to the United States in 1884, he sold a number of his patents on ac machines, transformers, and induction coils (including the Tesla coil as we know it today) to the Westinghouse Electric Company. Some say that his most important discovery was made at his laboratory in Colorado Springs, where in 1900 he discovered terrestrial stationary waves. The range of his discoveries and inventions is too extensive to list here but extends from lighting systems to polyphase power systems to a wireless world broadcasting system.

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What is Magnetic Flux Density?

The magnetic flux density or magnetic field strength is the number of magnetic lines of force passing through a unit area of material.

It is denoted by the capital letter B, and is measured in tesla. Its magnitude is determined by the following equation: $$ B = {\Phi \over A}$$ where $\Phi$ is the number of flux lines passing through the area A.

By definition, $$1 \,T = 1 \, Wb/m^2$$

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