Objective questions of capacitance

This assignment contains all important  objective questions of capacitance, it will be beneficial for the students preparing for class 12th board examination or preparing for JEE/NEET.

Before to solve this assignment student must solve the assignment of its previous chapter electric field and potential, to download the assignment of objective questions of electric field and potential click here.

Capacitance

1. There are 27 drops of a conducting fluid. Each has a radius r and they are charged to a potential V₀. These are combined to from a bigger drop. Its potential will be:

• (a)V₀      (b) 3V₀    (c) 9V₀          (d) 27V₀

2. 1000 small water drops each of radius r and charge q coalesce together to from one spherical drop. The potential of the bigger drop is larger than that of the smaller one by a factor:

• (a)1000        (b) 100         (c) 10          (d) 1

3. The capacitance of a parallel plate condenser does not depend upon:

• (a)area of the plates
• (b)medium between the plates
• (c)distance between the plates
• (d)metal of the plates

4. The force between the plates of a parallel plate capacitor of capacitance C and distance of separation of the plates d with a potential difference V between the plates is:

• (a)CV²/2d (b) C²V²/2d²    (c) C²V²/d²      (d) V²d/C

5. A parallel plate capacitor is made by stacking n equally spaced plates connected alternately. If the capacitance between any two plates is C, then the resulting capacitance is:

• (a)C    (b) nC         (c) (n-1)C        (d) (n+1)C

6. Two parallel metal plates carry charge +Q and -Q respectively. A test charge q₀ placed between them experiences a force F. Now the separation between the plates is doubled, then the force on the test charge will be:

• (a)F         (b) 2F             (c) F/2              (d) F/4

7. A 2μF capacitor is charged to a potential of 200 V and then isolated. When it is connected in parallel with a second capacitor which is uncharged, the common potential becomes 40 V. The capacitance of the second capacitor is:

• (a)2μF        (b) 4μF        (c) 8μF       (d) none of these

8. Three capacitors of capacitance 12μF each are available. The minimum and maximum capacitance which may be obtained from these are:

• (a)12μF, 36μF (b) 4μF, 12μF    (c) 4μF, 36μF   (d) 0μF, ꚙμF

To download entire assignment of objective questions of electric field click here -objective questions of Capacitance

 

To solve the assignment of important objective  questions of electric current click here.

 

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