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In electromagnetism, the work done on a unit n-pole in moving once around any complete path will be equal to the product of the current and the number of turns enclosed by that path is stated by _____.
CoulombтАЩs law
LenzтАЩs law
LaplaceтАЩs law
WorkтАЩs law
WorkтАЩs law
The statement describes the Work's law, which relates the magnetic potential difference around a closed loop to the current enclosed by that path. In magnetism, this is often expressed as the magnetic work done on a unit pole, which is equivalent to the magnetomotive force (MMF).
The statement describes the Work's law, which relates the magnetic potential difference around a closed loop to the current enclosed by that path. In magnetism, this is often expressed as the magnetic work done on a unit pole, which is equivalent to the magnetomotive force (MMF).
W=тИоHтЛЕdl=NтЛЕI тАФ Work done by a unit magnetic pole
MMF=NтЛЕI тАФ Magnetomotive force formula
When a unit magnetic pole travels once around a current-carrying conductor, the work done is equal to the product of the current and the number of turns linked by the path. This work is analogous to the electromotive force in electric circuits and is mathematically represented by the line integral of the magnetic field intensity over a closed path.
Work's law defines the magnetic work done on a unit pole as being equal to the enclosed current linkage.
This concept is the precursor to the integral form of Ampere's circuital law in magnetic circuits.
The SI unit of this work is the Ampere-turn (AтЛЕt).
Simplifies calculation of magnetic fields in symmetric geometries.
Provides a bridge between magnetic potential and electric current.
Only holds for closed-loop paths.
Conceptually abstract as isolated magnetic monopoles do not exist in nature.
Design of magnetic circuits for transformers and motors.
Calculation of MMF in electromagnetic coils.
Coulomb's Law describes force between electric charges (F=4╧А╧╡0тАЛ1тАЛr2q1тАЛq2тАЛтАЛ).
Lenz's Law states that induced emf opposes the change in magnetic flux that produced it.
Laplace's Law is often associated with the force on a current element dF=I(dl├ЧB).
D is correct тАФ Work's law specifically defines the magnetic work done on a unit n-pole as the product of current and turns.
Always distinguish between Ampere's Circuital Law (which relates H to I) and Work's Law (which frames this as magnetic potential/work), as they are mathematically equivalent but serve different conceptual contexts in exam questions.
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