Explain current and magnetic force, Electrical Engineering

Assignment Help:

Q. Explain Current and Magnetic Force?

The rate ofmovement of net positive charge per unit of time through a cross section of a conductor is known as current,

i(t) = dq / dt

The SI unit of current is the ampere (A), which represents 1 coulomb per second. In most metallic conductors, such as copper wires, current is exclusively the movement of free electrons in the wire. Since electrons are negative, and since the direction designated for the current is that of the net positive charge movement, the charges in the wire are thus moving in the direction opposite to the direction of the current designation. The net charge transferred at a particular time is the net area under the current-time curve from the beginning of time to the present,

1687_Current and Magnetic Force.png

While Coulomb's law has to do with the electric force associated with two charged bodies, Ampere's lawof force is concerned with magnetic forces associatedwith two loops ofwire carrying currents by virtue of the motion of charges in the loops. Note that isolated current elements do not exist without sources and sinks of charges at their ends; magnetic monopoles do not exist.


Related Discussions:- Explain current and magnetic force

Differences between vga and cga graphics adapters, Q.9 What are the main...

Q.9 What are the main differences between VGA and CGA graphics adapters? Ans: Colour Graphics Adapter (CGA), initially also known as Colour/Graphics Adapter or IBM Colo

Dc motor, what is the reason of low meagger result of dc motor

what is the reason of low meagger result of dc motor

The programming model of 8085 microprocessor , The  programming  Model of...

The  programming  Model of 8085 Microprocessor The programming  model  of 8085 microprocessor is  shown in figure  below in this  model  various 8 bit  and 16  bit registers a

What are cu and neu in 8087, What are CU and NEU in 8087? CU-Control un...

What are CU and NEU in 8087? CU-Control unit NEU- Numeric extension unit. The numeric extension unit implements all the numeric processor instructions whereas the control un

Electric Drive, project to write a program to simulate a dc motor on a matl...

project to write a program to simulate a dc motor on a matlab

Applications of holography, Applications of holography 1.       Hologra...

Applications of holography 1.       Holography is used in the non-destructive tests by interferometic methods. In this method called double exposure holographic interferometry,

Role of bureau of energy efficiency, Role of Bureau of Energy Efficiency ...

Role of Bureau of Energy Efficiency The role of the Bureau of Energy Efficiency is to: Ready standards and labels of appliances and equipment; Develop a list

Dc machine, explain front pitch and back pich ??

explain front pitch and back pich ??

Matlab simulation, Simulate and compare BER of QPSK system and 4-QAM system...

Simulate and compare BER of QPSK system and 4-QAM system without grey coding Eb/No=0.2.4.6.8.10

What is meant by polling, What is meant by polling? Polling or device p...

What is meant by polling? Polling or device polling is a process which recognizes the device that has interrupted the microprocessor.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd