- #1

Sunbodi

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## Homework Statement

A particle carrying charge +q is placed at the center of a thick-walled conducting shell that has inner radius R and outer radius 2R and carries charge −3q. A thin-walled conducting shell of radius 5R carries charge +3q and is concentric with the thick-walled shell. Define V = 0 at infinity.

**Part A**

Calculate all distances from the particle at which the electrostatic potential is zero.

Check all that apply.

Check all that apply.

r=10/3R

r=11/5R

r=5/6R

r=5/7R

## Homework Equations

V=kQ/r

## The Attempt at a Solution

0 = 1Q/R - 3Q/2R + 3Q/5R

0 = Q/10R

1/10th R is not in any of the solutions. I wonder what I'm doing wrong?