Learning Path
Question & Answer1
Understand Question2
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Explore TopicChoose the Best Answer
A
The force will be attractive.
B
The force will be repulsive.
C
There will be no force acting between them.
D
The force will be neutral.
Understanding the Answer
Let's break down why this is correct
Answer
According to Coulomb’s Law, the force between two point charges is \(F = k \frac{|q_1 q_2|}{r^2}\). Plugging in \(q_1 = +3\,\mu\text{C}\), \(q_2 = -2\,\mu\text{C}\) and \(r = 0. 5\text{ m}\) gives a positive magnitude of the force, but because the charges are opposite in sign, the force is attractive. The magnitude is \(F = 8. 99\times10^9 \frac{(3\times10^{-6})(2\times10^{-6})}{(0.
Detailed Explanation
Opposite charges attract because electric field lines run from positive to negative. Other options are incorrect because Some people think opposite charges repel; One might think a small difference in charge could make the force vanish.
Key Concepts
Coulomb's Law
Topic
Electric Fields and Dielectrics
Difficulty
easy level question
Cognitive Level
understand
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