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64 droplets of water of equal size unite from a large drop. If each dropet had equal and similar charge, how would the potential energy and capacitanc

Monjur Alahi

64 droplets of water of equal size unite from a large drop. If each dropet had equal and similar charge, how would the potential energy and capacitance change?


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Salim Ahmed Kawsar

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Correct Answer - Potential will increase 16 times capacitance 4 times and energy 16 times

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A drop of mercury of radius 2 mm is split into 8 identical droplets. Find the increase in surface energy. Surface tension of mercury `=0.465Jm^-2`

Correct Answer - A Increase in surface energy `=4piR^(2)T(n^(1//3)-1)=4pi (2xx10^(-3))^(2) (0.465 )(8^(1//3)-1) = 23.4xx10^(-6) J = 23.4 muJ`

2 Answers 1 views
Let `q_1` be a positive charge equal to the magnitude of the total charge on all electrons present in 0.9 mg of pure water and `q_2` be the charge on

Correct Answer - (a). 120000N (b). Force is nearly 10 times the weight of the car two conclusions can be drawn from the result- (i). Electrostatic force is a strong...

2 Answers 5 views
Controlling is necessary -  (A) For small enterprise  (B) For medium size enterprise  (C) For Large size enterprise  (D) For all the above

Correct option is: (C) For Large size enterprise

2 Answers 1 views
Two equal drops of water with the same and similar charge coalesce to form a large single drop. Show how the surface density, capacity, potential and

Correct Answer - `sigma_(1): sigma_(2)= 2^(2//3):2`

2 Answers 2 views
Eight charged drops of water, each of radius 1 m and having a charge of `10^(-10)` coulomb, combine to form a bigger drop. Determine the potential of

Correct Answer - 3600 V

2 Answers 1 views
A spherical oil drop, radius `10^(-4)` cm has on it at a certain a total charge of 40 electrons. Calculate the energy that would be required to place

Correct Answer - `[9.21 xx 10^(-21)J]`

2 Answers 2 views
By giving energy to a hydrogen atom in energy state n=1. If the potential energy of the atom in n=1 state be `-13.6 eV`, calculate (a) potential enreg

Correct Answer - `-0.85 eV, 12.75 eV, 971 Å`

2 Answers 1 views
`N` drops of mercury of equal radii and possessing equal charges combine to from a big drop. Compare the charge, capacitance and potential of bigger d

Correct Answer - `N,N^(1//3),N^(2//3)`

2 Answers 1 views
Make a list of steps that you feel are essential to unite the people of different caste, religions and languages in India.

India is a progressive nation but the directions of dividing India according to caste, religions and languages have still kept her handicapped. The possible remedies, I feel, to cure India...

2 Answers 1 views
Water drops are falling from a tip at regular time intervals. When the fifth drop is near to fall from tap the first drop is at ground. If the top is

Correct Answer - (i)`(7)/(16)H` (ii)`(5)/(16)H` (iii)`sqrt((Gh)/(2))`

2 Answers 1 views

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