- Lenz law states that the induced current always tends to oppose the cause which produces it.
- So in order to do work against opposing forces, we have to put extra effort.
- This extra work leads to periodic changes in magnetic flux hence more current is induced.
- Thus the extra effort is just transformed into electrical energy which is the law of conservation of energy.
- Hence this law obeys the law of conservation of energy.
Hence, lenz’s law obeys the law of energy conservation.