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Byju's Answer
Standard XII
Physics
Analysis of Force Equation
Explain the s...
Question
Explain the sign of emf using Lenz's law.
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Solution
Len'z law states that,
e
m
f
=
-
N
d
ϕ
d
t
Here emf is the induced voltage, N is the number of loops, and
ϕ
is the magnetic flux
The negative sign implies that the emf induced in the coil is in opposite direction to the flux that is linked to the coil
The direction of emf is always such that it opposes the change
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