Answered

1.1 A group of grade 09 learners conduct an investigation to determine the relationship between the length of a conductor and the current strength through the conductor. They use different lengths of the same type of conductor and measure the current strength. The following table shows the results of their investigation.

\begin{tabular}{|l|l|}
\hline Length of conductor [tex]$(m)$[/tex] & Current strength [tex]$(A)$[/tex] \\
\hline 0.1 & 0.43 \\
\hline 0.2 & 0.36 \\
\hline 0.3 & 0.30 \\
\hline 0.4 & 0.24 \\
\hline 0.5 & 0.18 \\
\hline
\end{tabular}

1.1.1 Identify the independent variable. (1)



Answer :

GinnyAnswer
In this investigation, the independent variable is the variable that the learners are changing or controlling in the experiment.

The table shows two sets of data:
1. Length of the conductor (measured in meters, m)
2. Current strength through the conductor (measured in amperes, A)

The learners are using different lengths of the same type of conductor to measure the current strength. Therefore, the length of the conductor is the variable they are controlling or changing intentionally to see how it affects the current strength.

Thus, the independent variable in this investigation is:

Length of conductor (m)

Other Questions