Class 12 Exam > Class 12 Questions > In bringing an electron towards another elect...
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In bringing an electron towards another electron, the electrostatic potential energy of the system
- a)becomes zero
- b)decreases
- c)remains same
- d)increases
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
In bringing an electron towards another electron, the electrostatic po...
The electron has negative charge. When an electron is bringing towards another electron, then due to same negative charge repulsive force is produced between them. So, to bring them closer a work is done against this repulsive force. This work is stored in the form of electrostatic potential energy. Thus, electrostatic potential energy of system increases.
Alternative: Electrostatic potential energy of system of two electrons
U=[1/4πε0][(−e)(−e)/r] = [1/4πε0](e^2/r)
Thus, as r decreases, potential energy U increases.
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In bringing an electron towards another electron, the electrostatic po...
Explanation:
When an electron is brought near another electron, the electrostatic potential energy of the system increases. This is because the two electrons repel each other due to their negative charges.
Electrostatic Potential Energy:
The electrostatic potential energy of a system is the energy stored in the system due to the interaction between charged particles. The potential energy of a system can be calculated using the formula:
U = k(q1q2)/r
Where U is the potential energy of the system, k is the Coulomb constant, q1 and q2 are the charges of the two particles, and r is the distance between the particles.
Increase in Electrostatic Potential Energy:
When two electrons are brought closer together, their electrostatic potential energy increases. This is because the two electrons have negative charges and they repel each other. As they move closer, the repulsion between them increases, and so does their potential energy.
Conclusion:
Therefore, the correct option is D, i.e., the electrostatic potential energy of the system increases when an electron is brought towards another electron.
When an electron is brought near another electron, the electrostatic potential energy of the system increases. This is because the two electrons repel each other due to their negative charges.
Electrostatic Potential Energy:
The electrostatic potential energy of a system is the energy stored in the system due to the interaction between charged particles. The potential energy of a system can be calculated using the formula:
U = k(q1q2)/r
Where U is the potential energy of the system, k is the Coulomb constant, q1 and q2 are the charges of the two particles, and r is the distance between the particles.
Increase in Electrostatic Potential Energy:
When two electrons are brought closer together, their electrostatic potential energy increases. This is because the two electrons have negative charges and they repel each other. As they move closer, the repulsion between them increases, and so does their potential energy.
Conclusion:
Therefore, the correct option is D, i.e., the electrostatic potential energy of the system increases when an electron is brought towards another electron.
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