Question

State and explain lenz law .how will you verify it experimentally.does it obey the principle of energy conservation

Answer 1

Lenz Law:

• It states that the magnetic field created by the induced electric current will oppose its own cause (i.e. the changing magnetic field).

Explaination Of The Law:

• It means that the pole produced by the induced electric current will be such that it will oppose the pole of the initial magnetic field.

• For example: If a coil is brought near the N pole of a bar magnet, its face will develop N pole (due to induced current) and this will oppose the motion of the coil towards the bar magnet.

Experimental Verification:

• When the bar magnet is taken away from the pole, S pole and clockwise is created in the wire loop. This can be confirmed by the Galvanometer.

• Similar case is seen when the magnet is moved towards the wire loop.

Refer to Attached diagram.

Answer 2

Answer:

lenz law   =  lenz law state that the  magnetic field created  by  induced in circuit  due to change in magnetic feild is directed to oppose the change in flux and  oppose the motion

                                         

                                 ε = - δφb  / δt

experiment =                             we can apply lenz law at various  things like

• inbalancing eddy current

• in detection of metals

• microphones

• AC generator

• experiment for induced current

• when current carrying coil is wound on iron rod on its left end it behaves like N pole and moved towards s pole

• yes , lenz law obeys the law of energy conservation the work done in against the opposing force ,   which result in change in flux hence current is induced on the basis of this we can say that the it obeys the law of conservation of energy .

• another law faradays law which is also similar but both law differ in lenz law obey conservation of energy  and produce  electromaganetic induction where faradays law  is about electromagnetic force