Chapter 25, Problem 91A

To determine

The conservation law which would be violated by the “anti-Lenz law”.

Explanation of Solution

Introduction:

As per law of conservation of energy,the net energy of an isolated system remainsconstant independentof whatever internal changes will take place with disappearance of energy in one form reemerging in another.

Conservation of energy is all about conserving the energy where the total energy in isolated system remains constant.

The “anti-Lenz law” would violate the principle of the conservation of energy as an unlimited amount of energy will be created because of the generationof a runaway process. This is because of a little increase in magnetic flux across a loop generates a current which thereon increases the magnetic flux through the loop.This process goes on forever and thus generating an infinite amount of energy.

Conclusion:

Hence,the “anti-Lenz law” would violate the law of conservation of energy because it would allow a changing magnetic field to grow without limits. The current would lead in anincrease without any work done and the generator would create energy.