Question

i) What is EMF? How does it forms.


ii) What is lenz‟s law? How can you apply conversation of energy for electromagnetic

induction.​

Answer 1

$\huge \underline \bold \green </p><p>{EMF:-}$

Electromotive force, is the electrical action produced by a non-electrical source. A device that converts other forms of energy into electrical energy, such as a battery or generator, provides an emf as its output. Sometimes an analogy to water "pressure" is used to describe electromotive force.

$\huge \mathfrak \pink </p><p>{Lenz's..law :-}$

Lenz's law. [ lĕnt′sĭz ] A principle stating that an electric current, induced by a source such as a changing magnetic field, always creates a counterforce opposing the force inducing it. This law explains such phenomena as diamagnetism and the electrical properties of inductors.

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Answer 2

Answer:

• Electromotive force, abbreviation E or emf, energy per unit electric charge that is imparted by an energy source, such as an electric generator or a battery. Energy is converted from one form to another in the generator or battery as the device does work on the electric charge being transferred within itself.

• Answer- lenz's law says that the emf must make the current flow in the solenoid so that the solenoid becaomes magmnetised so as to repel the magnet. You have to push the magnet against this repulsive force - so you are doing work - Force x distance and this is the source of the heat in the coil.

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