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A small sphere of radius r_(1)and charge q_(1)is enclosed by a spherical shell of radius rand charge q_(2)Show that if q_(1)is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge q_(2)on the shell is. |
| Answer» Solution :Hint: By Gauss’s LAW, field between the SPHERE and the shell is determined by `q_(1)` alone. HENCE, potential difference between the sphere and the shell is INDEPENDENT of `q_(2)`. If `q_(1)`is POSITIVE, this potential difference is always positive. | |