Sketch qualitatively the electric field lines both between and outside two concentric conducting spherical shells when a uniform positive charge q1 is on the inner shell and a uniform negative charge

-q_2
−q
2
​


is on the outer. Consider the cases

q_1 > q_2, q_1 = q_2
q
1
​
>q
2
​
,q
1
​
=q
2
​


, and

q_1 < q_2
q
1
​
2
​