The component among the options that lets some electricity flow through a circuit but decreases the current is the resistor. Here's how it works:
1. **Resistor**: A resistor is a component that resists the flow of electric current in a circuit. When electricity passes through a resistor, it encounters resistance, which reduces the current flowing through the circuit.
2. **Effect on Current**: By decreasing the current, a resistor helps control the flow of electricity in a circuit, limiting the amount of current that reaches different parts of the circuit.
3. **Example**: Imagine a simple circuit with a battery, a resistor, and an LED. When the circuit is connected, the resistor reduces the current flowing to the LED, protecting it from getting too much current and potentially burning out.
In summary, a resistor allows some electricity to flow through a circuit but decreases the current by providing resistance, which is why it is the correct choice in this scenario.
