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

What is a co-processor, What is a co-processor? 8087 NDP (numerical da...

What is a co-processor? 8087 NDP (numerical data processor) is also termed as math co-processor that is used in parallel with the major processor for number crunching applicat

Determine the rectified load voltage, Consider the circuit of Figure (a) wi...

Consider the circuit of Figure (a) with v S (t) = 10 cos ωt. Use the piecewise-linear model of the diode with a threshold voltage of 0.6 V and a forward resistance of 0.5  to dete

Diploma in electrical engineering, After I complete my diploma how I get a ...

After I complete my diploma how I get a job in goverment

Effect of supply voltage - stepper motor , Effect of Supply  Voltage ...

Effect of Supply  Voltage a.As the applied  as voltage  is increased hysteresis loss increases. b.Eddy current losses are given by W e α f 2 t 2 B 2 m Where B m =

Rotating magnetic fields, When a machine has more than two poles, only a si...

When a machine has more than two poles, only a single pair of poles needs to be considered because the electric, magnetic, and mechanical conditions associated with every other pol

Give the properties and application of pvc, Give the properties and applica...

Give the properties and application of PVC. Polyvinylchloride (PVC):  It is replacing rubber to a great extent in veracious applications. There is PVC insulated (non-sheathed)

Subtract registers and borrow from accumulator, Subtract Registers and Borr...

Subtract Registers and Borrow from Accumulator The  contents of the  register  and borrow  flag  are subtracted from   the contents of the accumulator and the  result is  store

Compute the signal-to-noise ratio, Q. (a) An ampli?er with F 0 = 3 or 4.77...

Q. (a) An ampli?er with F 0 = 3 or 4.77 dB, f 0 = 4 GHz, and BN = 14 MHz is used with an antenna forwhich T a =200K. The connecting path loss is 1.45, or 1.61 dB at a physical t

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