Electric circuit vs Magnetic circuit-Difference between Electric circuit and Magnetic circuit
This page on Electric circuit vs Magnetic circuit describes difference between Electric circuit and Magnetic circuit.
Electric Circuit | Magnetic Circuit |
---|---|
What Flows is I | What seems to flow is flux f |
The Cause of flow of current is E.M.F. | The Cause of Flow of flux is M.M.F. |
Resistance to flow of current is offered by resistance (R) | Resistance of flow of flux is offered by reluctance |
Current=E.M.F/Resistance | Flux=M.M.F./reluctance |
(i)e.m.f. is expressed in volts | (i)m.m.f. is expressed in ampere turns. |
(ii)Current is expressed in amperes | (ii)Flux is expressed in webers |
(iii)Current density is expressed in Amp/m2 | (iii) Flux density is expressed in wb/m2 |
Resistance R=1/sA where s is Conductivity | Reluctance=1/mA where m is permeability |
Conductance=1/Resistance | Permeance=1/Reluctance |
Conductivity=1/Resistivity | Permeabilty=1/Reluctivity |
Current in an electric circuit does actually flow | Flux in a magnetic circuit does not actually flow |
Energy is needed as long as the current flows. | Energy is needed only to create magnetic flux but not to maintain it. |
If temperature is constant, then resistance of electric circuit is Constant and it is independant of the current strength. | For a particular temperature, the permeability (magnetic Conductivity) depends upon the total flux. |
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