498,673 views
12 votes
12 votes
A student is classifying everyday substances as conductors or insulators using a simple circuit. The tested substances are connected to the circuit in the dotted box.Based on the above observations, which substance has the lowest resistance?Distilled water⊝Graphite⊝Pickle juice⊝Silicon⊝

A student is classifying everyday substances as conductors or insulators using a simple-example-1
User Morfic
by
2.7k points

1 Answer

21 votes
21 votes

Given the tested substances(conductors or insulators) have the following test results:

Sample Substance Qualitative Observation

Distilled water No light

Graphite Dim light

Pickle juice Bright light

Silicon Dim light

Based on the observations, let's determine the substance with the lowest resistance.

We know an increase in tempertaure also lead to an increase in resistance.

From the given circuit, we can see al substances were observed using the same voltage.

Thus, a bright bulb will have a higher watt rating and also a lower resistance.

Therefore, since the pickle juice produces a brightest light it can be said to have the lowes

User Michaelsmith
by
3.0k points