SATHEE: Electrostatics Question 503

Electrostatics Question 503

Question: To charges $q_{1}$ and $q_{2}$ are placed $30 c m$ apart, . A third charge $q_{3}$ is moved along the arc of a circle of radius $40 c m$ from $C$ to D. The change in the potential energy of the system is $\frac{q_{3}}{4 π ε_{0}} k$ , where $k$ is [CBSE PMT 2005]

Options:

A) $8 q_{2}$

B) $8 q_{1}$

C) $6 q_{2}$

D) $6 q_{1}$

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Answer:

Correct Answer: A

Solution:

Change in potential energy $(Δ U) = U_{f} U_{i}$

therefore $Δ U = \frac{1}{4 π ε_{0}} [(\frac{q_{1} q_{3}}{0.4} + \frac{q_{2} q_{3}}{0.1}) - (\frac{q_{1} q_{3}}{0.4} + \frac{q_{2} q_{3}}{0.5})]$

therefore $Δ U = \frac{1}{4 π ε_{0}} [8 q_{2} q_{3}] = \frac{q_{3}}{4 π ε_{0}} (8 q_{2})$

$∴ k = 8 q_{2}$

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Electrostatics Question 503

Question: To charges $q_{1}$ and $q_{2}$ are placed $30 c m$ apart, . A third charge $q_{3}$ is moved along the arc of a circle of radius $40 c m$ from $C$ to D. The change in the potential energy of the system is $\frac{q_{3}}{4 π ε_{0}} k$ , where $k$ is [CBSE PMT 2005]

Options:

Answer:

Solution:

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चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

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एनसीईआरटी व्यायाम वीडियो समाधान

Electrostatics Question 503

Question: To charges q1 and q2 are placed 30cm apart, . A third charge q3 is moved along the arc of a circle of radius 40cm from C to D. The change in the potential energy of the system is q34πε0k , where k is [CBSE PMT 2005]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: To charges $q_{1}$ and $q_{2}$ are placed $30 c m$ apart, . A third charge $q_{3}$ is moved along the arc of a circle of radius $40 c m$ from $C$ to D. The change in the potential energy of the system is $\frac{q_{3}}{4 π ε_{0}} k$ , where $k$ is [CBSE PMT 2005]