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

Clapp oscillator, derivation of frequency of oscillators clapp and derive C...

derivation of frequency of oscillators clapp and derive C effect?

Ac waveform, which ckt. Or components using for irregular ac sine wave ...

which ckt. Or components using for irregular ac sine wave change into pure sine wave.......

Calculate the value of load resistance, A battery having of 5 cells with em...

A battery having of 5 cells with emf and internal resistance of every cell is 1.5V and 0.25Ω connected in series. If the current flow by load resistance is 1.5A, calculate the valu

Determine the output waveform of the voltage, Q. The first four harmonics i...

Q. The first four harmonics in the Fourier series of current waveform given by where I m = 15 mA and T = 1 ms. If such a current is applied to a parallel combination of R

Discuss properties and uses of glass and glass products, Discuss important ...

Discuss important properties and uses of Glass and glass products. Glass and glass products - Glass is an inorganic material build by the fusion of various metallic oxides. The

Draw the circuit of a 7805 voltage regulator, Q. Draw the circuit of a 7805...

Q. Draw the circuit of a 7805 voltage regulator? Explain the functions of the capacitors used at its input and output sides. Functions of capacitors used at input and outp

Marginal tax rate, Stratos Corporation is a privately held tablet semicondu...

Stratos Corporation is a privately held tablet semiconductor technology firm with bright growth prospects.The past 5 years have seen the firm evolve from a pure startup to a profit

Illustrate breakpoint analysis, Q. Illustrate Breakpoint Analysis? When...

Q. Illustrate Breakpoint Analysis? When a circuit consists of two or more ideal diodes, it will have several distinct operating conditions resulting from the off and on states

Series connected motor, In this case, the armature is connected in series w...

In this case, the armature is connected in series with the field coils. Thus I a   = I f = I         NB. At starting, the back emf is zero (because the m

Rrc rotate accumulator right instruction , RRC Rotate  Accumulator  Right...

RRC Rotate  Accumulator  Right Instruction This instruction also  rotates the contents of the  accumulator  toward right  by one bit. The  D 7   bit moves  to D 5   position a

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