Concept explainers
When a battery is connected to a capacitor, why do the two plates acquire charges of the same magnitude? Will this be true if the two plates are different sizes or shapes?
When two positively charged small spheres are pushed towards each other, what happens to their potential energy
Answer to Problem 9Q
Solution:
c)It increases
Explanation of Solution
The potential energy between the two charged particle is given by
Where k is coulomb’s constant, q1 q2 are charges of small sphere, r is distance between them
As small spheres are pushed toward each other, the distance between the charges reduces. From equation, potential energy is inversely proportional to distance. Potential energy increases when two spheres are pushed toward each other.
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Physics: Principles with Applications
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