= 3.0cm is concentric with a larger thin insulating5.0cm. The smaller shell has charge q, = +6.0nC distributedA thin insulating spherical shell with radius R1spherical shell with radius R2uniformly over its surface, and the larger shell has charge q2 = -9.0nC distributed uniformlyover its surface. Take the electric potential to be zero at an infinite distance from both shells.a) What is the electric potential due to the two shells at the following distances r from theircommon center? i) r=0, ii) r=4.0cm, iii) r=6.0cmb) What is the magnitude of the potential difference between the surfaces of the two shells? Whichshell is at higher potential, the inner or the outer?

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