difference between electric circuit and magnetic circuit
Answers
Explanation:
Definition The closed path for magnetic flux is called magnetic circuit. The closed path for electric current is called electric circuit.
Relation Between Flux and Current Flux = mmf/reluctance Current = emf/ resistance
Units Flux φ is measured in weber (wb) Current I is measured in amperes
MMF and EMF Magnetomotive force is the driving force and is measured in Ampere turns (AT)
Mmf =ʃ H.dl Electromotive force is the driving force and measured in volts (V)
Emf = ʃ E.dl
Reluctance and Resistance Reluctance opposes the flow of magnetic flux S = l/aµ and measured in (AT/wb) Resistance opposes the flow of current
R = ρ. l/a and measured in (Ώ)
Relation between Permeance and Conduction Permeance = 1/reluctance Conduction = 1/ resistance
Analogy Permeability Conductivity
Analogy Reluctivity Resistivity
Density Flux density B = φ/a (wb/m2) Current density J = I/a (A/m2)
Intensity Magnetic intensity H = NI/l Electric density E = V/d
Drops Mmf drop = φS Voltage drop = IR
Flux and Electrons In magnetic circuit molecular poles are aligned. The flux does not flow, but sets up in the magnetic circuit. In electric circuit electric current flows in the form of electrons.
Examples For magnetic flux, there is no perfect insulator. It can set up even in the non magnetic materials like air, rubber, glass etc. For electric circuit there are a large number of perfect insulators like glass, air, rubber, PVC and synthetic resin which do not allow it to flow through them.
Answer:
BASIS MAGNETIC CIRCUIT ELECTRIC CIRCUIT
Definition The closed path for magnetic flux is called magnetic circuit. The closed path for electric current is called electric circuit.
Relation Between Flux and Current Flux = mmf/reluctance Current = emf/ resistance
Units Flux φ is measured in weber (wb) Current I is measured in amperes
MMF and EMF Magnetomotive force is the driving force and is measured in Ampere turns (AT)
Mmf =ʃ H.dl Electromotive force is the driving force and measured in volts (V)
Emf = ʃ E.dl
Reluctance and Resistance Reluctance opposes the flow of magnetic flux S = l/aµ and measured in (AT/wb) Resistance opposes the flow of current
R = ρ. l/a and measured in (Ώ)
Relation between Permeance and Conduction Permeance = 1/reluctance Conduction = 1/ resistance
Analogy Permeability Conductivity
Analogy Reluctivity Resistivity
Density Flux density B = φ/a (wb/m2) Current density J = I/a (A/m2)
Intensity Magnetic intensity H = NI/l Electric density E = V/d
Drops Mmf drop = φS Voltage drop = IR
Flux and Electrons In magnetic circuit molecular poles are aligned. The flux does not flow, but sets up in the magnetic circuit. In electric circuit electric current flows in the form of electrons.
Examples For magnetic flux, there is no perfect insulator. It can set up even in the non magnetic materials like air, rubber, glass etc. For electric circuit there are a large number of perfect insulators like glass, air, rubber, PVC and synthetic resin which do not allow it to flow through them.
Variation of Reluctance and Resistance The reluctance (S) of a magnetic circuit is not constant rather it varies with the value of B. The resistance (R) of an electric circuit is almost constant as its value depends upon the value of ρ. The value of ρ and R can change slightly if the change in temperature takes place
Energy in the circuit Once the magnetic flux sets up in a magnetic circuit, no energy is expanded. Only a small amount of energy is required at the initial stage to create flux in the circuit. Energy is expanding continuously, as long as the current flows through the electrical circuit.
This energy is dissipated in the form of heat.
Applicable Laws Khirchhoff flux and mmf law is followed Khirchhoff voltage and current law is followed. (KVL and KCL)
Magnetic and Electric lines Magnetic lines of flux starts from North pole and ends at South pole. Electric lines or current starts from positive charge and ends on negative charge.