In an electric circuit a fuse is a _________ _______ to prevent possible fire.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Function of a Fuse**: A fuse is a safety device used in electric circuits. Its primary function is to prevent excessive current from flowing through the circuit, which can lead to overheating and potentially cause a fire.

2. **Identifying the Role of a Fuse**: When the current exceeds a certain limit, the fuse will melt or blow. This interruption in the circuit stops the flow of electricity, thereby protecting the appliances connected to the circuit from damage.

3. **Conclusion**: Therefore, in an electric circuit, a fuse is a safety device that prevents possible fire hazards by interrupting the flow of current when it becomes too high.

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