[" Compute "r" ,if "],[" (a) "^(10)P_(r)=720]

Compute P for n=8,r=4

Compute P for n=10,r=3

Compute P for n=11,r=0

A computer system

Rearrange the parts of the sentence in correct order. As a result of greater competition P : while others are contracting Q : in the US computer industry R : some computer companies are expanding (a)PQR (b)QRP (c)PRQ (d)QPR

Three concentric conducting spherical shells of radii R, 2R and 3R carry charges Q, - 2Q and 3Q , respectively. a. Find the electric potential at r=R and r=3R where r is the radial distance from the centre. ltbr. b. Compute the electric field at r=5/2R c. compute the total electrostatic energy stored in the system. The inner shell is now connected to the external one by a conducting wire, passing through a very small hole in the middle shell. ltbr. Compute the charges on the spheres of radii R and 3R . e. Compute the electric field at r=5/2R .