Sideway
output.to from Sideway
Draft for Information Only

Content

Eletric Current
 Biot-Savart Law of Current in Wire
 Properties of Biot-Savart Law
 Source and Reference

Eletric Current

Electron current is the current that electrons exit batter at -ve terminal, and enter battery at -ve terminal. Conventional current is the current that fictitous positive charges exit battery at +ve terminal, and enter battery at -ve terminal. Electron Current 𝑖=𝑛𝐴𝐿𝐿/𝑣=𝑛𝐴𝑣=electronssecond
Conventional Current 𝐼=|π‘ž|𝑛𝐴𝑣=Coulombssecond=Amperes
where 𝑛=electronsπ‘š3= Density of electrons in the wire
𝐴=[π‘š2]= Cross sectional area of the wire
𝑣=π‘šπ‘ = Average velocity of electrons in the wire.

Biot-Savart Law of Current in Wire

image The Biot-Savart Law of Current in Wire is βˆ†π΅=πœ‡04πœ‹πΌβˆ†π‘™Γ—π‘Ÿ|π‘Ÿ|2 The Biot-Savart Law of current in wire can be dervied from Biot-Savart Law of charge particle. The current in the wire can be considered as many point charges in the wire. 𝑄𝑣=π‘π‘žπ‘£=π‘›π΄βˆ†π‘™π‘žπ‘£=π‘ž|𝑣|π‘›π΄βˆ†π‘™=πΌβˆ†π‘™

Properties of Biot-Savart Law

Magnetic field depends on frame of reference. The velocities of charges must be used the same reference frame as the observer.
Biot-Savart Law is an approximation. The changes of B-field or E-field propagate at speed of light. The law assumes that 𝑣β‰ͺ𝑐, and the measurement is not taken so quickly.

Source and Reference

https://www.youtube.com/watch?v=6AcPmW4xRyo&list=PLZ6kagz8q0bvxaUKCe2RRvU_h7wtNNxxi&index=12


Β©sideway

ID: 191201502 Last Updated: 12/15/2019 Revision: 0


Latest Updated LinksValid XHTML 1.0 Transitional Valid CSS!Nu Html Checker Firefox53 Chromena IExplorerna
IMAGE

Home 5

Business

Management

HBR 3

Information

Recreation

Hobbies 8

Culture

Chinese 1097

English 339

Reference 79

Computer

Hardware 249

Software

Application 213

Digitization 32

Latex 52

Manim 205

KB 1

Numeric 19

Programming

Web 289

Unicode 504

HTML 66

CSS 65

SVG 46

ASP.NET 270

OS 429

DeskTop 7

Python 72

Knowledge

Mathematics

Formulas 8

Set 1

Logic 1

Algebra 84

Number Theory 206

Trigonometry 31

Geometry 34

Coordinate Geometry 2

Calculus 67

Complex Analysis 21

Engineering

Tables 8

Mechanical

Mechanics 1

Rigid Bodies

Statics 92

Dynamics 37

Fluid 5

Fluid Kinematics 5

Control

Process Control 1

Acoustics 19

FiniteElement 2

Natural Sciences

Matter 1

Electric 27

Biology 1

Geography 1


Copyright © 2000-2024 Sideway . All rights reserved Disclaimers last modified on 06 September 2019