R.h. corkscrew rule, Electrical Engineering

R.h. corkscrew rule

Note the direction of the flux is given by Maxwell's 'R.H. corkscrew rule' and that the flux lines are continuous
Applying  Ampere's  Law  to  a  concentric circular path inside the ring gives:

 


H.l=N.I

so

H=N.I/l

where l is the  length of the chosen path inside the former. (If  the   radius   of  the   former   is   large compared to the width, then l =2 .pi .r )

 

 

1389_R.H. corkscrew rule.png

Where ℜ=l/µµ0 is called  the reluctance of the magnetic path It has been written in this way to show the identical form of the equation to  current flowing in the conductor ie:

 

I=V/R

where   the   current   I   flows   through   a conductor of resistance R.

Hence the name 'magnetic circuit'

Here,    
Φ is analogous to current I
N.I is analogous to V
ℜ is analogous to R
 
The analogy is so strong that the product N.I is often referred to as the 'magnetomotive force' (m.m.f) in analogy with the electro-motive force (e.m.f. or voltage) and

 

2386_R.H. corkscrew rule 1.png

 

(σ = conductivity of the material).So we may write:
 
flux Φ =  m.m.f / circuit reluctance (Analogous to:  I = voltage/resistance in an electrical circuit).

Hence the flux flows more 'easily' through  a material with high µ material - i.e. it requires less m.m.f to produce a given flux in the material, just as current flows more easily through a high conductivity material. If an air gap were now introduced into the core,

 

2090_R.H. corkscrew rule 2.png

Posted Date: 8/22/2012 4:45:12 AM | Location : United States







Related Discussions:- R.h. corkscrew rule, Assignment Help, Ask Question on R.h. corkscrew rule, Get Answer, Expert's Help, R.h. corkscrew rule Discussions

Write discussion on R.h. corkscrew rule
Your posts are moderated
Related Questions
Explain Corrosion. Corrosion: The process of constant eating (or destruction) up of metals (by the surface) by the surrounding is termed as corrosion. These metals are corroded

Q. Three dc generators are operating in parallel with excitations such that their external characteristics are almost straight lines over the working range with the following pairs

Q. Explain Digital Signal Formatting? After quantization and coding the samples of the message, a suitable waveform has to be chosen to represent the bits. This waveformcan the

Relays a) Sketch the schematic symbol for a relay with a single pole changeover switch b) Determine the coil resistance and determine the current at 12Vdc c) Connect the r


Q. Commercial FM radio broadcasting? Commercial FM radio broadcasting utilizes the frequency band of 88 to 108 MHz for the transmission ofmusic and voice signals. The carrier

Discuss about signal distortion in optical waveguides Ans: The major reason for signal distortion within optical waveguide is dispersion. Dispersion of the transmitted

You are to choose a particular application, model and simulate it using MATLAB and or SIMULINK. 1. Modelling 2. Testing and verification of the model 3. Demonstration o

Organisational Trends: 1 Organisations are economic and social entities in which a number of persons perform multifarious tasks in order to attain common goals. Four key organ

Buck Converter In buck  converters the output  voltage is  always  less than the  input  voltage. The basic  circuit  of buck converter is shown  in figure. The operation of th