The fuse wire is made of:

Options

A. Copper
B. Tin
C. Mixed metal of copper & tin
D. Mixed metal of Iron and Brass

Explanation

**Step-by-Step Solution:**

1. **Understanding the Purpose of a Fuse Wire:**
- A fuse wire is designed to protect electrical circuits from excessive current. When the current exceeds a certain limit, the fuse wire melts and breaks the circuit, preventing damage to the electrical devices.

2. **Identifying Materials Used in Fuse Wires:**
- Fuse wires are typically made from materials that have a low melting point. This is essential because the wire needs to melt quickly to interrupt the circuit when the current is too high.

3. **Analyzing the Options:**
- The options given are:
a) Copper
b) Tin
c) Mixed metal of copper and tin
d) Mixed metal of iron and brass

4. **Evaluating Each Option:**
- **Copper:** While copper is a good conductor, it has a relatively high melting point and is not suitable for fuse wires.
- **Tin:** Tin has a lower melting point compared to copper, but it is often used in combination with other metals.
- **Mixed metal of copper and tin:** This combination can create an alloy with a suitable melting point for fuse wires.
- **Mixed metal of iron and brass:** This combination is not typically used for fuse wires as it does not have the desired properties.

5. **Conclusion:**
- The most suitable material for making fuse wires is a mixed metal of copper and tin, as it provides the necessary properties for effective functioning.

**Final Answer:**
The fuse wire is made of a mixed metal of copper and tin.

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