Which one indicates the correct interactions between different charges?

Question

BlackTom AI · Accepted Answer

To tackle the question about interactions between different charges, I’ll evaluate each option on its own terms.
Option a: 'Positive charges repel one another, positive charge attracts negative charges.' This is correct because like charges repel and opposite charges attract, which is the fundamental statement of Coulomb’s law for electrostatics. The first clause captures the repulsion between positives, and the second clause captures the attraction between positive and negative.
Option b: 'Negative charges attract one another, positive charge repels negative charges.' The first part is true (negative charges repel or attract depending on context? actually like charges repel and opposite attract; negative charges tend to repel other negatives and attract positives). The second part is true about positive and negative attracting, but the combination as stated is inconsistent with the well-established rule that like charges repel and unlike charges attract. Overall, this option mixes correct and incorrect implications and is therefore misleading.
Option c: 'Positive charges attract one another, positive charge also attracts negative charges.' This is false. Positive charges do not attract other positive charges; they repel each other. The second portion is true (positive and negative attract), but the first half makes the entire statement incorrect.
Option d: 'Negative charges repel one another, negative charge also repels positive charges.' The first clause is true (like charges repel), but the second clause is false because negative charges attract positive charges, not repel them. This makes the option incorrect overall.
In summary, option a accurately summarizes the correct interactions (like charges repel; unlike charges attract), while options b, c, and d contain at least one incorrect implication that contradicts the fundamental electrostatic interaction rules.

UCIC 202503 PHYS101 Quiz 9

Which one indicates the correct interactions between different charges?

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