Homework Help: physics

Posted by sarthak on Friday, April 13, 2012 at 9:56am.

Three concentric metallic sphere shells of radii R,2R,3R are given charges Q1,Q2,Q3 respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. What is the ratio of the charges given to the shells Q1,Q2,Q3?

physics - bobpursley, Friday, April 13, 2012 at 10:23am
sigma=Q/area

but areas are proportioal to radius squared.

so if the sigmas are equal, then

Q1/r1^2=Q2/r2^2=Q2/r3^2

I assume you can take it from there.

Answer this Question

Related Questions

physics - Three charges are arranged in a line. From left to right, the charges ...
physics - Suppose the charge q2 can be moved left or right along a line ...
physics - Three charges are arranged in a line. From left to right, the charges ...
Physics - The Superpostion Principle: Three point charges q1, q2 and q3 like ...
physics - Suppose the charge q2 in the figure below can be moved left or right ...
physics - Three point charges, q1, q2, and q3, lie along the x-axis at x=0, x=3 ...
physics - The physics of electric potential energy at one corner of a triangle. ...
physics- check - 1. three point charges, q1, q2, q3, lie along the x-axis at x...
Physics - You are given two unknown point charges, Q1 and Q2. At a point on the ...
Physics - Three charges q1, q2 and q3 lie along the x-axis. Charge q1=2.5 micro ...

For Further Reading

First Name:
School Subject:
Answer: