SATHEE: Electrostatics Question 801

Electrostatics Question 801

Question: A capacitor has two circular plates whose radius are 8cm and distance between them is 1mm. When mica (dielectric constant = 6) is placed between the plates. The capacitance of this capacitor and the energy stored when it is given potential of 150 volt respectively are

Options:

A) $1.06 \times 10^{- 5} F, 1.2 \times 10^{- 9} J$

B) $1.068 \times 10^{- 9} F, 1.2 \times 10^{- 5} J$

C) $1.2 \times 10^{- 9} F, 1.068 \times 10^{- 5} J$

D) $1.6 \times 10^{- 9} F, 1.068 \times 10^{- 5} J$

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Answer:

Correct Answer: B

Solution:

[b] Area of plate $= π r^{2} = π \times {(8 \times 10^{- 2})}^{2}$

$= 0.0201 m^{2}$

$and d = 1 m m = 1 \times 10^{- 3} m$

Capacity of capacitor $C = \frac{ε_{0} ε_{r} A}{d} = \frac{8.85 \times 10^{- 12} \times 6 \times 0.0201}{1 \times 10^{- 3}}$

$= 1.068 \times 10^{- 9} F$ Potential difference,

$V = 150 volt$

Energy stored, $U = \frac{1}{2} C V^{2} = \frac{1}{2} \times (1.068 \times 10^{- 9}) \times {(150)}^{2}$

$= 1.2 \times 10^{- 5} J$

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Electrostatics Question 801

Question: A capacitor has two circular plates whose radius are 8cm and distance between them is 1mm. When mica (dielectric constant = 6) is placed between the plates. The capacitance of this capacitor and the energy stored when it is given potential of 150 volt respectively are

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

Electrostatics Question 801

Question: A capacitor has two circular plates whose radius are 8cm and distance between them is 1mm. When mica (dielectric constant = 6) is placed between the plates. The capacitance of this capacitor and the energy stored when it is given potential of 150 volt respectively are

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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