Which of the field patterns given below is valid for electric field as well as for magnetic field?

Options

A. (a)
B. (b)
C. (c)
D. (d)

Explanation

To determine which field pattern can represent both electric and magnetic fields, we can analyze each option given in the question. Here's a step-by-step solution:

### Step 1: Understand the Characteristics of Electric and Magnetic Fields
- Electric field lines originate from positive charges and terminate at negative charges. They can also be open-ended.
- Magnetic field lines always form closed loops and do not have a beginning or end. They can be produced by current-carrying conductors or magnets.

### Step 2: Analyze Each Option
1. **Option A**: The field lines are emerging from a point and do not appear to terminate anywhere.
- **Conclusion**: This pattern represents an electric field but does not form a closed loop, so it cannot represent a magnetic field.

2. **Option B**: The field lines are terminating, but their origin is not shown.
- **Conclusion**: Similar to Option A, this pattern does not form a closed loop and can only represent an electric field.

3. **Option C**: The field lines form a circular closed loop.
- **Conclusion**: This pattern can represent both electric and magnetic fields. Specifically, it can represent the magnetic field around a current-carrying wire and the induced electric field lines when there is a changing magnetic field.

4. **Option D**: The field lines represent the magnetic field of a bar magnet.
- **Conclusion**: This pattern represents only magnetic field lines and does not correspond to any electric field lines.

### Step 3: Final Selection
- After analyzing all options, **Option C** is the only one that represents both electric and magnetic fields.

### Final Answer
The correct answer is **Option C**.

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