Class notes
Class notes circuit and network theory
- Course
- Institution
This document describes capacitative circuits that is electronics, coulombs laws of electronics, capacitance and capacitors, energy stored in capacitors etc.
[Show more]
Seller
Follow
mundiaben
Content preview
EEE/ETI:1202CIRCUITS & NETWORK THEORY I
Lecture 5
, Introduction
• The branch of engineering which deals with the flow of electrons (i.e. electri
current) is called current electricity and is important in many ways. For exampl
it is the electric current by means of which electrical energy can be transferre
from one point to another for utilisation.
• There can be another situation where charges (i.e. electrons) do not move bu
remain static or stationary on the bodies.
• Such a situation will arise when the charged bodies are separated by som
insulating medium, disallowing the movement of electrons.
• This is called static electricity and the branch of engineering which deals wit
static electricity is called electrostatics.
• The most useful outcomes of static electricity are the development of lightnin
rod and the capacitor.
, Electrostatics
• The branch of engineering which deals with charges at rest is called electrostatics.
• When a glass rod is rubbed with silk and then separated, the former become
positively charged and the latter attains equal negative charge.
• It is because during rubbing, some electrons are transferred from glass to silk.
• Since glass rod and silk are separated by an insulating medium (i.e., air), the
retain the charges.
• In other words, the charges on them are static or stationary.
• Note that the word ‘electrostatic’ means electricity at rest.
, Importance of Electrostatics
• A few important applications of electrostatics are :
a) Electrostatic generators can produce voltages as high as 106 volts. Such hig
voltages are required for X-ray work and nuclear bombardment.
b) We use principles of electrostatics for spray of paints, powder, etc.
c) The principles of electrostatics are used to prevent pollution.
d) The problems of preventing sparks and breakdown of insulators in high voltag
engineering are essentially electrostatic.
e) The development of lightning rod and capacitor are the outcomes of electrostatics
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mundiaben. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now