An open coil has:

Options

A. Zero resistance and inductance
B. Infinite resistance and zero inductance
C. Zero resistance and high inductance
D. Both (a) and (b)

Explanation

To solve the question regarding the properties of an open coil, we will analyze the characteristics of an open coil step by step.

### Step-by-Step Solution:

1. **Understanding an Open Coil**:
An open coil is essentially a coil that is not closed or connected in a complete loop. This means that there is a break in the circuit.

**Hint**: Remember that a closed coil allows current to flow, while an open coil does not.

2. **Resistance of an Open Coil**:
Since the coil is open, it behaves like an open circuit. In an open circuit, there is no continuous path for current to flow, which implies that the resistance is infinite.

**Hint**: Think about how current behaves in a circuit; if there is a break, current cannot flow.

3. **Inductance of an Open Coil**:
Inductance is a property of a coil that quantifies its ability to store energy in a magnetic field when current flows through it. However, since there is no current flow in an open coil, it does not store energy, leading to zero inductance.

**Hint**: Recall that inductance requires current to be present; without current, there is no magnetic field.

4. **Conclusion**:
Based on the analysis, we conclude that an open coil has infinite resistance and zero inductance. Therefore, the correct option is:

**Option 2: Infinite resistance and zero inductance.**

### Final Answer:
An open coil has infinite resistance and zero inductance.