Home Physics Electrostatics Potential & Capacitance Karnataka - CET Previous Year Question A system of two charges separated by a certa…
Physics Electrostatics Potential & Capacitance Karnataka - CET Previous Year Question MCQ (Single Correct)

A system of two charges separated by a certain distance apart stores electrical potential energy. If the distance between them is increased, the potential energy of the system,

A
may increase or decrease
B
increases in any case
C
remains the same
D
decreases in any case.

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Text Solution

Verified by Experts
The correct answer is:
A

Case I: For unlike charges

When one of the charges is negative, , therefore the potential energy of the system is negative.

Now, if distance between the charges is increased, potential energy of the system will increase.

Case II: Por like charges (both positive or negative) Since for like charges , therefore potential energy of the system is positive.

Now, if distance between the charges is increased potential energy of the system will decrease.

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