A device that is used to break or make an electric circuit is called, _____

Explanation

**Step-by-Step Solution:**

1. **Understanding the Electric Circuit**: An electric circuit consists of a power source (like a battery) and a load (like a bulb). The circuit allows electric current to flow from the power source to the load.

2. **Function of the Circuit**: When the circuit is closed (meaning all connections are complete), the electric current flows through the circuit, allowing the bulb to light up. If the circuit remains closed indefinitely, the bulb can overheat and get damaged.

3. **Need for Control**: To prevent damage to the bulb from overheating, we need a way to control the flow of electricity in the circuit. This is where a specific device comes into play.

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