Electric field induced by changing magnetic fields are

Options

A. Conservative
B. Non-conservative
C. May be conservatie or non-conservative depending on the condition
D. Nothing can be said

Answer

To solve the question regarding the nature of the electric field induced by changing magnetic fields, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept**:
- The electric field can be induced by a changing magnetic field, as described by Faraday's law of electromagnetic induction. This law states that a change in magnetic flux through a closed loop induces an electromotive force (EMF) in that loop.

2. **Identifying the Nature of the Electric Field**:
- We need to determine whether this induced electric field is conservative or non-conservative. A conservative electric field is one where the work done around any closed loop is zero.

3. **Analyzing Work Done**:
- For a conservative field, the work done on a charge moving around a closed path should equal zero. However, in the case of an electric field induced by a changing magnetic field, the work done around a closed loop is not zero. This is because the induced electric field creates a continuous circulation of electric field lines.

4. **Conclusion**:
- Since the work done in a closed loop is not zero, we conclude that the electric field induced by changing magnetic fields is **non-conservative**.

5. **Final Answer**:
- Therefore, the correct answer to the question is that electric fields induced by changing magnetic fields are **non-conservative**.