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Points Table
Viva questions for Physics Class 12
विज्ञान 10 – महत्वपूर्ण MCQs
Fundamentals of Arithmetic
Science 10 – Important MCQs

12 Capacitance 03

12 Capacitance 04

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Question 1 of 6

1. Question

The electric energy U stored in a capacitor of capacitance C with charge Q and voltage V is U. Which is wrong?

\(U==\dfrac{1}{2}\dfrac{Q^{2}}{C}\)

\(U=\dfrac{1}{2}QV\)

\(U=\dfrac{1}{2}CV^{2}\)

\(U=\dfrac{1}{2}QV^{2}\)

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Question 2 of 6

2. Question

If E is the electric field in any region then electric energy density (electric energy stored per unit volume of space) in the region is

\(\dfrac{1}{2}\varepsilon _{0}^2E^{2}\)

\(\dfrac{1}{2}\varepsilon _{0}E^{}\)

\(\dfrac{1}{2}\varepsilon _{0}E^{2}\)

\(\dfrac{1}{2}\varepsilon _{0}^2E^{}\)

Correct

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Question 3 of 6

3. Question

SI unit of electric energy density is

\({J}m^{-1}\)

\({J}m^{-2}\)

\({J}m^{0}\)

\({J}m^{-3}\)

Correct

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Question 4 of 6

4. Question

Dimension of electric energy density is

\(\left[ M^{1}L^{-1}T^{-2}\right]\)

\(\left[ M^{1}L^{-1}T^{-1}\right]\)

\(\left[ M^{2}L^{-1}T^{-2}\right]\)

\(\left[ M^{1}L^{-2}T^{-2}\right]\)

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Question 5 of 6

5. Question

Capacitors of capacitance \(C_1, \ C_2, \ C_3, \) are connected in series, and each has same value, C. The equivalent capacitance will be

\(C \over 3\)

\(3C \)

\(C\)

can not be said

Correct

Incorrect
Question 6 of 6

6. Question

Capacitors of capacitance \(C_1, \ C_2, \ C_3, \) are connected in parallel, and each has same value, C. The equivalent capacitance will be

\(C\)

\(C \over 3\)

\(3C\)

\(9C\)

Correct

Incorrect

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Points Table
Viva questions for Physics Class 12
विज्ञान 10 – महत्वपूर्ण MCQs
Fundamentals of Arithmetic
Science 10 – Important MCQs

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