What is induced e.m.f.?
Induced e.m.f. is the voltage produced in a circuit due to a change in the magnetic field around the circuit.
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What is Lenz's Law?
Lenz's Law states that the direction of induced e.m.f. and the resulting current is always such that it opposes the change in magnetic flux that produced it.
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What is the Lenz's law formula linking induced e.m.f (ϵ), change in magnetic flux (ΔΦ), time taken (Δt), and the number of turns on the coil?
ϵ = induced e.m.f. (V)
N = number of turns on coil
ΔΦ = change in magnetic flux (Wb)
Δt = time taken (s)
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How does the direction of the induced e.m.f. relate to the direction of the change in magnetic flux?
The direction of the induced e.m.f. is always such that it opposes the change in magnetic flux.
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What is the role of Lenz's Law in electromagnetic induction?
Lenz's Law is used to determine the direction of the induced emf and the resulting current in electromagnetic induction.
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