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

1- phase full bridge inverter with r- load , 1- phase  Full Bridge Invert...

1- phase  Full Bridge Inverter with R- Load 1-phase full  bridge inverter with resistive load R i it has  advantage over 1-? half  bridge  inverter that it does  not require

What is piconet, A collection of devices connected by Bluetooth technology ...

A collection of devices connected by Bluetooth technology in an ad hoc fashion.

Transistor, why BETA a current gain parameter of common emitter amplifier i...

why BETA a current gain parameter of common emitter amplifier is temperature dependent?

Explain the theory of thermal runaway, Q. Explain the theory of thermal run...

Q. Explain the theory of thermal runaway?           The maximum average power Pdmax which a transistor can dissipate depends upon the transistor construction and may lie in the

Sphl load stack pointer with hl instruction, SPHL Load Stack  pointer with...

SPHL Load Stack  pointer with HL Instruction This instruction  copies  the contents of HL register  pair  the stack pointer register. The instruction format is             S

Self inductance , Self Inductance If a current is passed through a co...

Self Inductance If a current is passed through a coil, it creates a flux within the coil. Any attempt to change this flux will create a back emf that acts to oppose the chang

Mr. Davis, The new kitchen is to be 20feet long and it''s width is 75% of i...

The new kitchen is to be 20feet long and it''s width is 75% of it''s length. The door to the kitchen is on the short wall and is 10% of the width of that wall. you want to put in m

Explain pnp transistor circuit, Explain pnp transistor circuit . pnp tr...

Explain pnp transistor circuit . pnp transistor: A transistor consist of  three terminals. In this pnp transistor there is two blocks of p- type semiconductors that are separa

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