According to Lenz's law of electromagnetic induction

Options

A. The induced e.m.f. is not in the direction opposing the change in magnetic flux
B. The relative motion between the coil and magnet produces change in magnetic flux
C. Only the magnet should be moved towards coil
D. Only the coil should be moved towards magnet

Explanation

### Step-by-Step Solution

1. **Understanding Lenz's Law**: Lenz's law states that the direction of the induced electromotive force (EMF) and the induced current in a closed loop is such that it opposes the change in magnetic flux that produced it. This means that if the magnetic flux through a loop increases, the induced current will flow in a direction that creates a magnetic field opposing this increase.

2. **Analyzing the Statements**:
- **Statement 1**: "The induced EMF is not in the direction opposing the change in the magnetic force."
- This statement is incorrect. According to Lenz's law, the induced EMF does oppose the change in magnetic flux.

- **Statement 2**: "The relative motion between the coil and the magnet produces the change in the magnetic force."
- This statement is correct. The change in magnetic flux occurs due to the relative motion between the coil and the magnet, which is essential for electromagnetic induction.

- **Statement 3**: "Only the magnet should be moved towards the coil."
- This statement is incorrect. Either the magnet can be moved towards the coil, or the coil can be moved towards the magnet; the key is the relative motion.

- **Statement 4**: "Only the coil should be moved towards the magnet."
- This statement is also incorrect for the same reason as statement 3. The relative motion is what matters, not which object is moving.

3. **Conclusion**: Based on the analysis of the statements, the only correct statement is **Statement 2**: "The relative motion between the coil and the magnet produces the change in the magnetic force."

### Final Answer
The correct statement according to Lenz's law of electromagnetic induction is: **The relative motion between the coil and the magnet produces the change in the magnetic force.**

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