A toroid has/have

Options

A. Single pole
B. Dipole
C. Infinite pole
D. No pole

Answer

To solve the question "A toroid has/have," we need to analyze the characteristics of a toroid and determine the number of magnetic poles it possesses.

### Step-by-Step Solution:

1. **Understanding a Toroid**:
- A toroid is a doughnut-shaped coil of wire, typically wound in the form of a circle. It consists of a circular ring with a wire wound around it.

2. **Current Flow in the Toroid**:
- When an electric current passes through the wire wound around the toroid, it generates a magnetic field. The direction of the magnetic field can be determined using the right-hand rule.

3. **Magnetic Field Configuration**:
- Inside the toroid, the magnetic field lines are concentrated and circular, following the shape of the toroid. Outside the toroid, the magnetic field is negligible.

4. **Identifying Magnetic Poles**:
- In a typical magnetic dipole (like a bar magnet), there are distinct north and south poles. However, in the case of a toroid, the magnetic field is continuous and does not have distinct poles.

5. **Conclusion**:
- Since a toroid does not have distinct north and south poles, we can conclude that a toroid has no poles.

### Final Answer:
A toroid has no poles.

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