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

Explain sar instructions in 8086 family, Explain SAR instructions in 8086...

Explain SAR instructions in 8086 family with example and their effect on flag. SAR: Shift each bit of operand right through given number of bits, this instruction shifts eve

Assignment question , An audio amplifier with feedback needs gain of approx...

An audio amplifier with feedback needs gain of approximately 500 in a 3-dB bandwidth extending from 60 Hz to 25 kHz. Assume this is accomplished using a feedback network with ß=0.0

Compute the efficiency of the transformer, Q. These data were obtained from...

Q. These data were obtained from tests carried out on a 10-kVA, 2300:230-V, 60-Hz distribution transformer: • Open-circuit test, with low-voltage winding excited: applied voltag

What are the disadvantages of using robots, What are the Disadvantages of u...

What are the Disadvantages of using robots -  They can find it difficult to deal with 'unusual' circumstances for example a door is missing from a car waiting on the paint spra

Analysis of frequency response with pspice and probe, Analysis of Frequency...

Analysis of Frequency Response with PSpice and PROBE PSpice can readily accomplish the circuit analysis as a function of frequency, and PROBE can display Bode plots for magnitu

Working hydro-electric power plant, With the help of neat diagrams illustra...

With the help of neat diagrams illustrate the construction and working of various elements used in hydro-electric power plant. Compare hydro-electric power plant with other type

Pneumatic circuit diagram, FIGURE shows a pneumatic circuit diagram used fo...

FIGURE shows a pneumatic circuit diagram used for air supply and exhaust in an automatic control system.  (a) Name all symbols (including pipelines) used in the system. (b) N

Electronic Devices, To demonstrate a practical method of testing semiconduc...

To demonstrate a practical method of testing semiconductor diodes.

Give classification of plastics, Give classification of plastics and al...

Give classification of plastics and also the differences between them. Plastics are materials (containing carbon as common element) that have organic substances of high mol

Cipper, when i/p voltg is grater than battery diode is clse or open

when i/p voltg is grater than battery diode is clse or open

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