The physical quantity, which is conserved on the basis of Lenz's Law is

Options

A. Charge
B. Momentum
C. Mass
D. Energy

Answer

To solve the question regarding the physical quantity conserved based on Lenz's Law, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Lenz's Law**: Lenz's Law states that the direction of induced current in a closed loop is such that it opposes the change in magnetic flux that produced it. This means that the induced current will create a magnetic field that opposes the original change in magnetic field.

2. **Connection to Conservation Laws**: Lenz's Law is fundamentally linked to the principle of conservation of energy. When a magnetic field changes, it induces an electromotive force (EMF) and a current in the conductor. The energy required to do this work comes from the mechanical energy used to move the magnet or change the magnetic field.

3. **Energy Transformation**: When we move a magnet towards a coil, the work done on the magnet is converted into electrical energy in the coil. The induced current generates its own magnetic field, which opposes the motion of the magnet, thus conserving energy.

4. **Conclusion**: The physical quantity that is conserved according to Lenz's Law is energy. This is because the induced current and the magnetic field it creates act to oppose the change that produced them, ensuring that energy is not lost but transformed from one form to another.

### Final Answer:
The physical quantity that is conserved on the basis of Lenz's Law is **energy**.

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