N spherical droplets , each of radius r have been charged to have a potential V each.If all these droplets were to coalece to form a single large drop what would be the potential of this large drop?
(Given taht the capacitance of a sphere of radius x equals 4pie absilon not Kx)
Asked by vasturushi | 27th Dec, 2017, 09:17: PM
let q be the charge on each spherical capacitor.
capacitance of each droplet = 4πε0Kr = q / V;
where r is radius of each drop, V is potential on each drop
hence V = q / 4πε0Kr
volume of coaleced spheren fromed from N droplets = N × (4/3) π×r3;
hence radius of coalesed sphere = N1/3×r
capacitance of coalesed sphere = 4πε0KN1/3×r
potential =charge/capacitance =( N×q ) / ( 4πε0KN1/3×r ) = ( N2/3 × q ) / ( 4πε0Kr ) = N2/3 V
Answered by | 28th Dec, 2017, 04:57: PM
- the electrical potential on the surface of a hollow sphere is 40V. its radius is 2 m. find the electrical potential near the centre of this hollow sphere.
- what is electric potential??
- kindly solve this problem....
- What is the difference between potential energy, potential difference and voltage?
- Question:A test charge is moved from lower potential point to higher potential point. The potential energy of point charge will....remain same/increase/decrease/zero?
- a charge of 30nc produces electric field at point 0.8m and 1.2m away from the charge along a straight line in the same side find the potential at these points and also find the work do e to move a charge of 2nc between these points
- Two metal spheres each of mass 1 gmail and radius 0.5 cm are placed on a smooth horizontal insulated plate such that their centres are 15 cm apart. One is charged to a potential of 500 volt and the other to 100 volt. What is the velocity of each sphere when they drift away to a distance of 30 cm between their centres?
- please solve the question in the picture.
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number