Measurements of two electric currents are shown in the chart.

Electric Currents

\begin{tabular}{|l|l|l|}
\hline
Current & Volts & Amperes \\
\hline
[tex]$X$[/tex] & 1.5 & 7.8 \\
\hline
[tex]$Y$[/tex] & 9 & 0.5 \\
\hline
\end{tabular}

Which best compares the two currents?

A. Current X has a greater potential difference, and the charges flow at a slower rate.
B. Current Y has a greater potential difference, and the charges flow at a slower rate.
C. Current X has a greater potential difference, and the charges flow at a faster rate.
D. Current Y has a greater potential difference, and the charges flow at a faster rate.



Answer :

To solve this problem, we need to compare two aspects of the given electric currents [tex]\( X \)[/tex] and [tex]\( Y \)[/tex]: the potential difference (measured in volts) and the rate of charge flow (measured in amperes).

Let’s evaluate both of these aspects step-by-step:

1. Potential Difference (Volts) Comparison:
- For Current [tex]\( X \)[/tex], the potential difference is 1.5 volts.
- For Current [tex]\( Y \)[/tex], the potential difference is 9 volts.

We compare these values:
- Since 1.5 volts (for [tex]\( X \)[/tex]) is less than 9 volts (for [tex]\( Y \)[/tex]), Current [tex]\( Y \)[/tex] has a greater potential difference.

2. Rate of Charge Flow (Amperes) Comparison:
- For Current [tex]\( X \)[/tex], the rate of charge flow is 7.8 amperes.
- For Current [tex]\( Y \)[/tex], the rate of charge flow is 0.5 amperes.

We compare these values:
- Since 7.8 amperes (for [tex]\( X \)[/tex]) is greater than 0.5 amperes (for [tex]\( Y \)[/tex]), the charges flow at a faster rate in Current [tex]\( X \)[/tex].

Combining these two comparisons:
- Current [tex]\( Y \)[/tex] has a greater potential difference.
- The charges flow at a faster rate in Current [tex]\( X \)[/tex].

Thus, the correct statement describing the comparison of the two currents is:
- Current [tex]\( Y \)[/tex] has a greater potential difference, and the charges flow at a faster rate.

Therefore, the best comparison among the given options is:
Current [tex]\( Y \)[/tex] has a greater potential difference, and the charges flow at a faster rate.