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COMPARISON WITH MAGNET HEAT GENERATION, MAGNETIC HEATING AND RESISTANCE HEATING
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Faraday's law
“The emf induced in a circuit is the variation of magnetic flux through the circuit with time.
proportional to it.”
Faraday's law of induction can be formulated as:
ε = −dφB / dt
is where φB = ∫B.dA is the magnetic flux through the circuit
If Lenz's Law is
Faraday's law states that the induced emf and magnetic flux have opposite signs.
shows. This (-) sign means: Induced induced by any change in magnetic flux
The emf will create a magnetic flux to oppose the magnetic flux change that produces it.
is in the direction of the current. The magnetic field induced in any wire ring
occurs so that the flux remains constant
Accordingly, we can briefly express Lenz's Law as follows:
“The direction of the induction emf is the direction of the current that will generate a magnetic flux in a direction that opposes the change in magnetic flux through the ring.
Lenz's law is also clearly seen in the figure above. As the direction of the current passing through the ring changes, the induction emf also changes its direction in the opposite direction.
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