Question

A small sphere of radius r1 and charge q, is
enclosed by a spherical shell of radius r, and
charge q Show that if q, 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' on the shell is.....???
​

Answer 1

Explanation:

Potential of the Shell:

V2=k(q1+q2)r2

Potential of the Sphere:

V1=kq1r1+kq2r2

As r1<r2,V1>V2. So positive charge will flow from sphere(inside) to the shell(outside) when connected.

Answer 2

Answer:

Explanation:here,Potential of the Shell:

V2=k(q1+q2)r2

Now Potential of the Sphere:

V1=kq1r1+kq2r2

Therefore. r1<r2,V1>V2.

Hence ,positive charge will flow from sphere(inside) to the shell(outside) when connected.

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