The fact that the lights don't get dimmer when you turn on another one is evidence that the lights are wired in parallel. Explain.
the amount of power delivered to the bulb depends solely on the voltage across the lamp, nothing else.
To understand why the lights don't get dimmer when you turn on another one, we need to understand the difference between parallel and series wiring.
In a parallel circuit, the electrical components, such as the lights in this case, are connected side by side. Each component has its own independent connection to the power source (e.g., a battery or wall outlet). This means that in a parallel circuit, each component receives the full voltage of the power source.
On the other hand, in a series circuit, the electrical components are connected one after another in a single loop. In this arrangement, the total voltage of the power source is divided equally among all the components. Therefore, when more components are added in a series circuit, the voltage available to each component decreases, resulting in a dimmer light output.
Now, coming back to the question, the fact that the lights don't get dimmer when you turn on another one suggests that they are wired in parallel. In a parallel circuit, each light has its own independent connection to the power source. When one light is turned on, it does not affect the voltage being supplied to other lights. As a result, all the lights in the parallel circuit receive the full voltage, maintaining their brightness regardless of how many are turned on.
So, the absence of dimming when turning on another light is evidence that the lights are wired in parallel rather than in series.