Basic Electrical Engineering

Features Includes:

  • 215 - 3D/2D Animation
  • 810 Pages of Content
  • 60 Lecture Hours
  • 130 Solved Problems
  • 230 Quiz
  • Suitable for All Technical University Syllabus

Course Description

Beginning with the basic principles of electricity, this learning solution provides an exhaustive coverage of heating and magnetic effects of electrical current, Electrostatics and ends with a brief introduction to Batteries.


  • Comprehend the basic principles of electricity
  • Explain the concept of work, power and energy
  • To Understand the heating effects of electric current
  • To Understand the magnetic effects of electric current
  • Explain the electromagnetic induction
  • Comprehend electric charge and electrostatic field
  • Explain the concept of batteries

Introduction to basic principles of electricity - Evolution in human comforts - Atom and Atomic structure - Matter. Classifications of materials- Valence electron - Comparison between Conductor, Insulator and Semi-Conductor. Basic definitions- Charge - Voltage and current. Electric circuit and Ohm's law - Electric networks and circuits - Ohm's law - How to remember Ohm's law - Problems on Ohm's law. Resistance- Laws of resistance. Specific resistance - Problems- Effect of alloying on resistivity. Effects of temperature on resistance - Temperature co-efficient of resistance - Variation of temperature coefficient of resistance – Problems on temperature effects on resistivity. Resistance in series - Connection of series resistance – Problem. Resistance in Parallel - Connection of parallel resistance - Problems on parallel resistance - Resistances in series and parallel combination - Problems on series-parallel combination- Current division in parallel circuits.


Work- Force -SI unit - Problem. Power, Energy- Electrical power - Electrical energy – Problems


Heating Effects of Electrical current - Causes of heating effects of electric current. Applications of heating effects of electric current - Incandescent lamp - Electric kettle - Electric cooker - Space heaters or room heaters - Electric iron - Infrared Lamp – Geysers. Thermal efficiency - Problems on thermal efficiency.


Develop the idea of lines of force and magnetic field - Introduction to magnet -Types of Magnets- Magnetic field. Field pattern of long current carrying conductor - Magnetic field around a current carrying conductor - Magnetic field due to straight conductor. Field patterns of solenoid and toroid - Field pattern of a solenoid - Field pattern of a toroid. Laplace's law or Biot-Savart’s law - Work law - Field strength due to straight current carrying conductor - Field strength on the axis of a solenoid - Laplace's law or Biot-Savart's law - Field strength around a long straight conductor - Field strength at any point on the axis of a circular conductor or coil. Mechanical force on a current carrying conductor in a magnetic field - Mechanical force on a current carrying conductor inside a magnetic field (Forward current) - Force between two parallel current carrying conductors - Nature of the force with different directions of the currents - Problems on magnetic field strength and force. Definitions - Magnetizing force, magnetic flux, permeability, reluctance. Develop the concept of Magnetic Circuit - Magnetic circuits - Series magnetic circuits - Parallel magnetic circuit with air gap - Magnetic leakage and fringing - Problems on simple Magnetic Circuits - Compare magnetic circuit and electric circuit.


Introduction to electromagnetic induction - Faraday's law of electromagnetic induction – Induced EMF - Dynamically and statically induced e.m.f - Problems on induced e.m.f.Lenz's law, Fleming’s right hand rule - Direction of induced e.m.f. and current. Concept of self and mutual inductance -Self-inductance - Mutual inductance. Expressions for self and mutual inductances - Coefficient of self-induction (L) - Coefficient of mutual inductance (M) - Problems on self and mutual inductances. Co-efficient of coupling - Problems on Co-efficient of coupling. Inductances in series and parallel - Inductances in series- Series and parallel aiding inductance – Problems. Energy stored per unit volume - Inductance parameter - Energy stored in a magnetic field - Problems on energy stored in inductance. Lifting power of a magnet- Problems on lifting power of a magnet.


Coulomb's laws of electrostatics - Static electricity - Laws of electrostatics. Absolute and relative permittivity– Permittivity - Problems on coulomb's law. Electrostatic fields - Electric field - Plotting of electrostatic fields - Isolated positive charge - Like charges side by side - Electrostatic induction. Comparison of electrostatic and magnetic fields - Electric flux - Comparison between electric lines of force and magnetic lines of force. Electric field intensity and gauss theorem - Field strength (or) Field intensity - Gauss theorem. Electrical potential, potential difference - Electric potential - Dielectric strength and importance of dielectric constant.Capacitance – Introduction - Capacitor charging and discharging. Capacitance equation - Capacitance of a parallel plate capacitor - Composite dielectric capacitors - Types of capacitors and uses of capacitor. Capacitors in series and parallel - Capacitors in series - Capacitor in parallel - Capacitors in series-parallel. Energy stored in a capacitor - Problems on energy stored in a capacitor.


Primary and Secondary Cells - Cell terminology - Classification of Cells - Comparison between primary and secondary cell. Chemical reaction of secondary cell - Chemical reactions of lead acid battery -Chemical reactions of lead acid cell during charging - Chemical reaction of nickel iron cell - Charging and discharging reaction nickel cadmium cell. Lead Acid battery - Construction of lead acid battery - Containers of a lead acid cell - Plates of a lead acid cell – Separators - Vent plugs or filler caps. Effect of temperature on specific gravity of electrolyte - Variation in specific gravity during charging and discharging - Effect of specific gravity on e.m.f. Nickel iron Cell - Construction of nickel iron cells. Application of storage cells -Nickel-cadmium battery - Charging and discharging reaction - Applications of lead-acid battery - Applications of a nickel iron battery - Advantages of nickel cadmium cell over other batteries - Applications of a nickel cadmium cell. Charging methods of batteries - Precautionary measures to be taken during charging and discharging of batteries - Trickle charging. Indications of a fully charged battery - Capacity of a battery - Factors affecting capacity of a Battery. Efficiency of a battery - Watt-hour efficiency (or) energy efficiency – Problems. Construction of maintenance free battery - Introduction to maintenance free battery - Action of maintenance free batteries - Comparison between maintenance free battery and lead acid battery - Applications of maintenance free batteries. Applications of battery - Miniature button Cell - Mercury Cell - Construction of silver oxide cell - Specifications and Ratings of miniature button cells - Important applications of miniature button cells.