Basic Concepts of Electrostatics
Electrostatics is a branch of physics that studies electric charges at rest. In this topic we have to study the working of capacitor in terms of electrostatics.
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Before starting with higher study of electricity and electronics we suggest you to read these articles on basics of electricity. They will help you understand the concepts more easily.
How does electricity work?
The flow of charges i.e. electrons from one point to another is called electric current. But this current is produced only when we apply potential difference across a conductor.
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Faraday’s Laws of Electromagnetic Induction
Electromagnetism is the physical interaction among electric charges, magnetic moments, and the electromagnetic field. The electromagnetic field can be static, slowly changing, or form waves. Electromagnetic waves are generally known as light and obey the laws of optics.
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Ideal & Practical Voltage Sources
There are two types of electric sources: Ideal and practical sources. As the name suggests the ideal source is always imaginary, while the practical source is the one which we use in our practical circuits.
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Internal Resistance of Electric Source
Every electric source like battery or generator contains some internal resistance. This resistance is invisible, but it is always present within the source. If the internal resistance of the battery or generator is very low, its power delivering capacity is very high.
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Ohm’s Law and Concept of AC & DC
The Ohm’s Law states that so long as the physical state of the conductor remains the same, the amount of electric current (I) flowing through the conductor is directly proportional to the potential difference (V), provided the resistance (R) of the conductor remains the same.
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What is Peak, R.M.S. & Average Value of ac voltage and current
The average value of a waveform, which swings symmetrically above and below zero, will be obviously zero, when measured over a long period of time. Hence, average values of currents and voltages are invariably taken over one complete half-cycle (either positive or negative) rather than over one complete full-cycle (which would result in an average value of zero).
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Kirchhoff’s Current Law (KCL)
In Kirchhoff’s Current Law, the algebraic addition of all currents in a closed circuit is always equal to zero. It gives us the idea of sign convention of currents in a circuit.
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Kirchhoff’s Voltage Law (KVL)
The KVL is the best tool to analyse the electrical and even electronic circuits. If you learn KVL properly, you will be able to read all the branches in a circuit like we read a book with all pages in it…! So don’t ignore this topic and the topic of KCL also. It is one of the most important topic in fundamentals of electricity and electronics.
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Concept of Electric Power
Definition: The rate of doing electric work is called electric power. The unit of electric power is Joule/second or Watt (W). The electric power can also be measured in kilo-watt-hour (kWh) or Joules (J).
Read MoreConcept of Electric PowerConcept of AC voltage – Learn in simple language
In this article, don’t forget to read the reference notes. Power supply is the basic requirement of any working circuit or device. We know that the electronic circuit uses semiconductors and so the circuit requires only DC power supply for…