Question

1. make sure the video is showing the conductivity test. to select a test, click change , then select the test you want and click load . at the beginning of the conductivity test, why does the bulb go out when the wires are clipped off the bottom?

Answer 1

In a conductivity test, the bulb goes out when the wires are unclipped because the circuit becomes open, preventing the flow of electric current and turning off the bulb.

Step-by-step explanation:

The student's question is about a conductivity test in a Physics experiment involving a circuit with a light bulb. During a conductivity test, the bulb goes out when the wires are clipped off the bottom because this action opens the circuit. An open circuit means there is no continuous path for the electric current to flow from one terminal of the power source to the other. Without a closed loop, electrons cannot move through the circuit, resulting in no electrical current, and thus the bulb does not light up.

Answer 2

The bulb goes out at the beginning of the conductivity test because the circuit is interrupted when the wires are clipped off the bottom.

Step-by-step explanation:

When the wires are clipped off the bottom, the circuit is broken, causing the flow of electricity to cease. The conductivity test aims to measure the ability of a material to conduct electricity. Initially, the wires provide a continuous path for the electric current to flow from the power source, through the material being tested, and back to the source. This completes the circuit, allowing the current to flow and the bulb to light up. However, once the wires are disconnected, the circuit is broken, causing the flow of electricity to stop, resulting in the bulb going out.

Understanding the concept of a closed circuit is crucial here. A closed circuit enables the flow of electricity through a complete pathway, allowing the energy to move continuously. In this scenario, the bulb lights up when the wires form an unbroken loop, allowing the current to flow through the material. When the wires are removed or clipped off, the circuit is disrupted, interrupting the flow of electricity and causing the bulb to go out.

This interruption in the circuit is similar to turning off a light switch in a room. When the switch is on, the circuit is closed, allowing electricity to power the light bulb. However, when the switch is turned off, the circuit is broken, and the light goes out. Similarly, in the conductivity test, removing the wires breaks the circuit, causing the bulb to extinguish due to the absence of a complete pathway for the electric current to flow.