Nootan Kumar Mittal Class 12th ISC PHYSICS{Chapter 3rd Electric Potential (part II NUMERICALS SOLUTION).}

      Chapter III Electric Potential           NUMERICALS SOLUTION.    

Note: Take values of necessary physical constant from the following table;

1). The amount of work done is bringing a charge of------------------------. Find the electric potential at the point.

Ans1.

2). How much work is done in bringing a charge of---------------------------------, if the potential difference between the two point is 4V?

Ans 2.

3).5J work is done in moving a positive charge---------------------------. Find the PD between the points.

Ans3.

4). Compute electric potential at distance of  0.1m from a point charge ----.

Ans4.

5). A wire is bent in the circle of radius 10 CM.--------------------------------. What is the electric potential and intensity of field at its centre?

Ans5.

6). Calculate in the given figure:

|. Electric potential at the point A and B,

||. Work done in taking the some amount of negative charge from A to B,(OA=0.10m,OB=0.20m)

Ans6.

7). A charge A OF  8.0μC is situated at a distance of 1.00m----------------------------off start from D to C?

Ans7.

8. The  Charges +20 µC ans -10 µC are 6 cm----------------------------------on the right bisector of the line joining the charges.

And.8

9. The potential due to a point charge at at a distance of-------------------------. Same charge at a distance of 0.4m.

Ans.9

10. The electric field at a point due to a point charge-----------------------------.Calculate the distance of the point from the charge and the magnitude of the charges.

Ans.10

11.A point charge  of 6.0×10^-8 C is situated at coordinate origin ------------------------------------An electon  from the point x=3m to  x=6m ?  

Answer 11.

12. At each corner of equilateral triangle charge of 250×10^-6-------------------from each corner  is 18cm?

Answer 12.

13. Electric charge  of same nature  and each of 100 ×10^-6 are place at---------------- Determine the resultant potential at center of square .

Answer 13.

14.10 j of work is required to move a charge -200C from point A to B ------------ electric field parallel to the line joining A and B 

Answer no. 14

15. 3.24×10^ -4 j of work is done in taking 3.0× 10 ^-8 C  of charge  uniform electric field ------- calculate the electric field intensity 

Answer no. 15

 

16. Two plane matallic plates are at distance at 2cm these are connected to a battery of 1000V--------------Will the proton experience different Force at different places between the two plates

Answer no. 16

17. The distance between to horizontal parallel-plates is 2.0 cm --------------- increase in electrical energy of the electron  in moving from one plate to another 

Answer no. 17

How much kinetic energy is gained by electron ----------- through a potential difference of 1000V ?

                                        (ISC 2008)

19. Am alpha  particle  at rest is accelerated   through 10^6 V-------------- which particle will gain more  velocity if both start from rest ?