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Bidita Basu asked a question
Subject: Physics, asked on on 30/4/16
a cuboidal piece of block of wood has dimensions a ,b and c .its relative density is d. it is floating in a large body of water such that the side a is vertical.it is pushed down a bit and released.the time period of SHM executed by it??
Priyanshu Sharma asked a question
Subject: Physics, asked on on 7/4/17
two identical conducting spheres carrying different charges attract each other with a force F when placed in air medium at a distances 'd' apart. The spheres are brought into contact and then taken to their original positions. Now, the two spheres repel each other with a force whose magnitude  equal to that of the initial attractive force. Find the ratio between the initial charges on the sphere.
Samridhi Jain asked a question
Subject: Physics, asked on on 14/4/17
A charged gold leaf electroscope has its leaves apart by certain amount having enclosed air. When the electroscope is subjected to X rays then the leaves 1. Further dilate 2. Start oscillating 3. Collapse 4. Remain unaltered
Sandali Khare asked a question
Subject: Physics, asked on on 11/2/18
Two metallic spheres of radii R and 2R charged so that both of these have same surface charge density sigma. If they are connected to each other with a conducting wire, in which direction will the charge flow and why?
Mayank Deshpande asked a question
Subject: Physics, asked on on 10/9/17

Positive charge Q is distributed uniformly throughout an insulating sphere of radius R, centered
at the origin. A particle with positive charge Q is placed at x = 2R on the x axis. The
magnitude of the electric field at x = R/2 on the x axis is:


A. Q/4πε0R2
B. Q/8πε0R2
C. Q/72πε0R2
D. 17Q/72πe0R2
E. none of these
Arvind asked a question
Subject: Physics, asked on on 1/9/16

A copper wire of diameter d is immersed in an oil of density rho not. There is a uniform electric field E directed vertically upwards such that the copper ball remains just suspended in the oil. Density of copper is rho c. The charge on the ball is ?
Sudeshna Panigrahi asked a question
Subject: Physics, asked on on 5/7/17
The electrostatic force of repulsion between two positive charge is 3.7 X 10^-9 N , when the separation is 5 angstrom. How many electrons are missing?
Priyanshu Sharma asked a question
Subject: Physics, asked on on 6/4/17
A solid spherical conductor of radius R has a spherical cavity of radius a(a<R) at its centre. The chargew at the inner surface, outer an the position r(a<r<R) are ?
Akansha asked a question
Subject: Biology, asked on on 17/4/17
Derivation of electric field intensity due to uniformly charged thin infinite plane sheet
Bidita Basu asked a question
Subject: Physics, asked on on 29/4/16
A conductive sphere of radius r is given a charge Q. Another sphere of radius R is put in contact with it.They are separated after they have shared a charge. assuming that the spheres are held at fixed distance apart, what should be the value of R so that the force between two charged spheres is the maximum?..if u can help me out!
Arya Mohapatra asked a question
Subject: Physics, asked on on 23/4/16
Sir! I tried to solve problems f coulomb's law... But can't solve...Can you give some tricks to easily solve them?
Sai Rakshith Avadhani M S asked a question
Subject: Physics, asked on on 15/5/17
​The mass of an electron is 9.11*10^-31 kg,that of a proton is 1.67*10^-27kg .Find the ratio of Fe/Fg of the electric force and the gravitational force exerted by the proton on the electron.
Akshita asked a question
Subject: Physics, asked on on 18/7/17
ques no 20 and 21 with full solution
Akshita asked a question
Subject: Physics, asked on on 18/7/17
ques no 11 with explaination
Priyanka asked a question
Subject: Physics, asked on on 6/5/17
the region between two concentric spheres of radii 'a' and 'b' respectively , has a volume charge density rho=A/r , where r is the distance from the centre and A is constant . at the centre of the spheres is a point charge Q. The value of A such that the electric field in the region between the spheres will be constant is
Samridhi asked a question
Subject: Physics, asked on on 4/5/16
Two identical charged spheres are suspended by strings of equal lengths .The string makes an angle of 30 with each other When suspended in liquid of density 0.8g/cm^3, The angle remains the same.if density of material of sphere is 1.6g/cm^3 the dielectric constant of liquid is?
Anusuya Roy asked a question
Subject: Physics, asked on on 8/5/16
sir in colomb's law questions, i did not understand the solution of the first and the sixth question.... sir can u explain???
Tanisi asked a question
Subject: Physics, asked on on 10/8/16
a piece of metal 2kg in weight is suspended from one end of a vertical wire whose other end is fixed and the piece is fully immersed in an oil of density 0.7*10^3 kg m^­3.the length of the wire increases by 1mm.if the diameter of the wire is 0.6mm,youngs modulus is 2*10^11 Nm-22 and the volume of the metal piece is 800 cm^3,then calculate the initial length of the wire
Aishwarya Trivedi asked a question
Subject: Physics, asked on on 21/6/17
​can you solve q -8
Aishwarya Trivedi asked a question
Subject: Physics, asked on on 21/6/17
solve q -13 please solve with detail explaination
Dhruvin Pandya asked a question
Subject: Physics, asked on on 14/5/19
Find force on 1 C charge a tO in the figure

Figure
Adithya asked a question
Subject: Physics, asked on on 15/6/16
when a sphere of radius R and charge +q and a sphere of radius of 2Rand charge -3q and a sphere of radius of 4R and charge -6q are kept in contact with each other​simultaneously? pls explain in detail also give a general idea how to solve these type of question pls help me
Siddharth Sudhakar asked a question
Subject: Physics, asked on on 30/6/17
If we treat the earth as a conducting sphere of radius 6400 km, its capacitance would be of the order of A)1F B)1mF C)1microF D)1000F
Akshita asked a question
Subject: Physics, asked on on 18/7/17
ques no 8 with explaination
Priyanka Priyanka asked a question
Subject: Physics, asked on on 16/8/17
Dimension of electric field intensity
Almas asked a question
Subject: Physics, asked on on 5/4/17
an electric dipole placed parallel to infinitely long linear charged body will experience
​a) both force and torque
b) only force
c) only torque
d) neither force nor torque
please explain 
Neha Nilesh Patil asked a question
Subject: Physics, asked on on 15/4/19
two point charge of +2 micro-coulomb and +6 micro coulomb repel each other by 12 N if each given an additional charge of -4 micro-coulomb then force will be? (a) 4N (attractive) (b) 60 N (repulsive)
(c) 4 N (repulsive) (d) 12 N (attractive)
Akshita asked a question
Subject: Physics, asked on on 18/7/17
ques no 18 with explaination
Harsh Jhamtani asked a question
Subject: Physics, asked on on 26/4/17
electric field intensity at a point in between two parallel sheets with like charges of same surface density is??
Aishwarya Trivedi asked a question
Subject: Physics, asked on on 21/6/17
please give a detailed solution of this ques with diagram explaination
 
Vidhi Maheshwari asked a question
Subject: Physics, asked on on 25/4/18
Q. A metal sphere carrying a charge + q is located at the centre of the cavity inside a large uncharged metallic shell use gausses law to find the expression for the electric field at point p1 and p2. and draw the pattern of electric field lines in this arrangement.
PLEASE DON'T SEND THE LINK.
Akshita asked a question
Subject: Physics, asked on on 18/7/17
ques no 3 with reason
Dhruvin Pandya asked a question
Subject: Physics, asked on on 2/6/19
An infinitely large sheet of charge (surface charge density σ) is passed through a sphere as  shown  in the figure. The flux passing through the sphere is.

(1) πR2σ4ε0
(2) 2πR2σ4ε0
(3) 3πR2σ4ε0
(4) πR2σε0
Manideep Varma asked a question
Subject: Physics, asked on on 18/11/16

A cylinder with adiabatic walls contains water. The cylinder is closed on top with a metal cover with area A, thickness b, thermal conductivity K, Heat capacity of water is c, temperature of surroundings is T0, assumed to be constant. An electric heater produces heat at a rate H. Find the temperature of water as function of time after the heater is switched on
Akshita asked a question
Subject: Physics, asked on on 10/7/17
this ques2
Mukul Bhardwaj asked a question
Subject: Physics, asked on on 13/5/17
Two similiarly and equally charged identical metal sphere A and B repel each other with a force of 2*10-5N. A third identical uncharged sphere C is touched with A and then placed at the mid point between A and b . Calculate the net electric force on C.
Sandali Khare asked a question
Subject: Physics, asked on on 13/1/18
A charge 1C is placed at the centre of the cube. Find flux associated with each face of the cube.
Dhruvin Pandya asked a question
Subject: Physics, asked on on 2/6/19
A cube of edge length R is kept in such a way that
one face of it is just inside a uniformly charged ring
of radius R as shown. The flux passing through the cube is
1) πRλ/6ε0
2)πRλ/4ε0
3)πRλ/3ε0
4) πRλ/2ε0​​​​​​​
​​​​​​​
Sandali Khare asked a question
Subject: Physics, asked on on 13/1/18
Derive expression for electric field due to plane charge sheet. Also prove that electric field is independent of distance.
Sandali Khare asked a question
Subject: Physics, asked on on 30/3/18
Two point dipoles of dipole moment p and R       are at a distance x from each other and p is parallel to R .then the force between the dipoles is (a)k4pr/x^4 (b)k3pr/x^4 (c)k6pr/x^4   (d)k8pr/x^4
Neha Nilesh Patil asked a question
Subject: Physics, asked on on 27/4/19
Two charges 9e and 3e are placed at a separation r the distance of the point where the electric field intensity is 0
Amaan Laskar asked a question
Subject: Physics, asked on on 19/5/16
A charge +q is ejected from infinity with velocity v towards +Q charge ,it stops at a distance of R from the +Q charge.At what distance it will stop if it is ejected with 2v velocity
Avika . asked a question
Subject: Physics, asked on on 6/4/18
Two identical metal plates having equal and similar charges repel each other with a force of 103 Newton when there please 10 cm apart in a medium of dielectric constant 5 that remained the charge on each sphere ( Ans :- 23.9 × 10^6) please don't send any link.
Bhavya Arora asked a question
Subject: Physics, asked on on 19/6/18
Two points charges are kept 'd' distance apart in vacuum. how should the distance b/w them be changed so that the coulomb's force b/w them remains the same when they are kept in medium of dielectric constant 16.
Jassimrat Kaur asked a question
Subject: Physics, asked on on 19/4/17
Of charge Q initially on a tiny sphere a portion,a portion q is to be transferred to a second nearby sphere. Both spheres can be treated as particles. For what value of q/Q will the electrostatic force between two spheres be maximum?
Almas asked a question
Subject: Physics, asked on on 5/4/17
How electrostatic potential changes from one point charge to another identical point charge ?
a) constant
b) first increases then decreases
c) first decreases then increases
d) decreases continuously
answer is c. please explain 
Abirami Kankeyan asked a question
Subject: Physics, asked on on 22/4/17
An uncharged spherical conductor is placed in such a way that its centre coincides with the origin. Two cavities bearing charges +q and -q, are craved inside it

The field outside the sphere at a distance r will be.??
Sai Prasad B asked a question
Subject: Physics, asked on on 12/5/17
Pls solve the 6th one:-
​
Abhishek Shekhar asked a question
Subject: Physics, asked on on 11/5/19
Consider the situation shown in the figure what are the sign of Q1 and Q2 if the lines are drawn in proportion to the charge what is the ratio of q1/q2?
Jassimrat Kaur asked a question
Subject: Physics, asked on on 14/4/17
derive the electric field for a hemispherical ring
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