Which term determines the interaction strength contributed by the charges in Coulomb's law?

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Multiple Choice

Which term determines the interaction strength contributed by the charges in Coulomb's law?

Explanation:
The interaction strength coming from the charges is set by the product of the two charges, q1 q2. In Coulomb's law, the force magnitude is proportional to k times the product q1 q2 divided by r^2. The constant k and the distance r determine overall scaling and geometry, but the specific contribution from the charges themselves is captured by q1 q2: doubling either charge (or both) changes the force in proportion to that change, while the sign of the product decides attraction vs. repulsion.

The interaction strength coming from the charges is set by the product of the two charges, q1 q2. In Coulomb's law, the force magnitude is proportional to k times the product q1 q2 divided by r^2. The constant k and the distance r determine overall scaling and geometry, but the specific contribution from the charges themselves is captured by q1 q2: doubling either charge (or both) changes the force in proportion to that change, while the sign of the product decides attraction vs. repulsion.

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