Class 12th

The actual role of these laws is that faraday's law tells us the magnitude of induced EMF and Lenz's law was a modification of faraday which also could tell the direction of induced EMF. These two laws are combined together to form the base of any concept related to electromagnetic induction.

This is because the original formula of magnetic flux is a dot product. As a result, the cos? in the formula appears when we remove the dot product of the formula. This cos? signifies that the direction of magnetic flux should always be perpendicular if its value is zero.

The key difference between both these terms is that magnetic flux density is the magnetic field in a particular unit area. Whereas, magnetic flux is the quantity of magnetic field in a particular space. Magnetic flux is a scalar quantity whereas magnetic flux density is a vector quantity.

Their connection with each other is established as a result of Faraday's law of induction. This law states that a change in the magnetic field can produce electricity. This is due to the production of an electromotive force from the loop which results in the generation of electricity.

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HVZ reaction:

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Cannizzaro reaction is shown by aldehydes containing no alpha–H atoms

Higher is the stability of carbocation, greater is the reactivity towards Sn1.

Correct order of reactivity towards Sn₁ reaction is