Assertion: In the phenomenon of mutual induction, self- induction of each of the coil persists.
Reason: Self-induction arises when strength of current in one coil changes. In mutual induction current is changing in both the individuals coils.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true statement but resaon is false.
D. If both assertion and reason are false.

Explanation

To solve the question, we need to analyze the assertion and reason provided:

### Assertion:
In the phenomenon of mutual induction, self-induction of each of the coils persists.

### Reason:
Self-induction arises when the strength of current in one coil changes. In mutual induction, current is changing in both the individual coils.

### Step-by-Step Solution:

1. **Understanding Mutual Induction**:
- Mutual induction occurs when a change in current in one coil induces an electromotive force (EMF) in another coil that is placed nearby. This happens due to the changing magnetic field created by the first coil.

2. **Understanding Self-Induction**:
- Self-induction is the phenomenon where a changing current in a coil induces an EMF in the same coil. This occurs because the changing current alters the magnetic field within the coil itself.

3. **Analyzing the Assertion**:
- The assertion states that in mutual induction, the self-induction of each coil persists. This is true because even though the coils are influencing each other, each coil still experiences changes in its own current, which leads to self-induction.

4. **Analyzing the Reason**:
- The reason explains that self-induction occurs when the current in one coil changes, and in mutual induction, the current is changing in both coils. This is also true because as the current in one coil changes, it affects the magnetic field, which in turn affects the current in the second coil, and vice versa.

5. **Conclusion**:
- Both the assertion and the reason are true. The assertion accurately reflects the phenomenon of mutual induction, and the reason correctly describes the conditions under which self-induction occurs.

### Final Answer:
Both the assertion and reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is option number one.

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