A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct circuit? (1 point)
The circuit is complete, so electrons can flow freely.
O The light bulb is directly connected to the battery,
O The flow of electrons travels in one direction.
O The electrons flow back and forth through the circuit.
The flow of electrons travels in one direction.
The circuit is called a direct circuit because the flow of electrons travels in one direction.
The correct answer is: The flow of electrons travels in one direction.
To determine why the circuit is called a direct circuit, we can analyze the options provided:
- The circuit is complete, so electrons can flow freely: This statement describes a closed circuit, where all the necessary components are connected, allowing the flow of electrons. While it is an important characteristic of any circuit, it does not explain why this specific circuit is called a direct circuit.
- The light bulb is directly connected to the battery: This statement describes the connection between the light bulb and the battery. While this is also an important aspect of the circuit, it does not clarify the term "direct circuit."
- The flow of electrons travels in one direction: This statement correctly explains why the circuit is called a direct circuit. In a direct circuit, also known as a direct current (DC) circuit, the flow of electric current occurs in one direction, from the positive terminal of the battery through the circuit components to the negative terminal. This is in contrast to alternating current (AC) circuits, where the flow of electric current periodically changes direction.
- The electrons flow back and forth through the circuit: This statement describes the behavior of electrons in an alternating current (AC) circuit, where the flow of electric current alternates back and forth. However, in a direct circuit, the flow of electrons goes in one direction, not back and forth.
In conclusion, the correct answer is that the circuit is called a direct circuit because the flow of electrons travels in one direction.