What is wrong with this form of the Maxwell-Faraday equation?
∮→E ∂→l=◯∫∫∂→B∂t
"Line integral of the electric field is equal to the double integral of partial derivative of magnetic field with respect to time".
So far as I remember the correct form used to be "Line integral of electric field is always (negative) surface integral of partially derived magnetic field..."
Answer
The integral form of the Maxwell-Faraday law is ∮∂SE⋅dℓ=−ddt∫SB⋅ˆnda.
If you want to apply the time derivative to the integral on the RHS, you must account for two effects that can cause a change in the magnetic flux: the time derivative of the magnetic field, and the velocity v of the surface S through the field. This gives ∮∂SE⋅dℓ=−∫S∂B∂t⋅ˆnda−∮∂SB×v⋅dℓ.
(See, e.g., Jackson 3rd edition, eq. 5.137.) You are correct that there must be a minus sign on the RHS; this is the mathematical statement of Lenz's law.
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