A Solid Spherical Conductor Has Charge +Q and Radius R. It is Surrounded By a Solid Spherical Shell With Charge -Q | Bzziii

A solid spherical conductor has charge +Q and radius R. It is surrounded by a solid spherical shell with charge -Q, innerradius 2R, and outer radius 3R. Which of the following statements is true? 

(i)The electric potential has a maximum magnitude at C and the electric field has a maximum magnitude at A 

(ii) The electric potential has a maximum magnitude at D and the electric field has a maximum magnitude at B. 

(iii) The electric potential at A is zero and the electric field has a maximum magnitude at D. 

(iv). Both the electric potential and electric field achieve a maximum magnitude at B.

(iv). Both the electric potential and electric field achieve a maximum magnitude at B.

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CBSE Class 12 Physics Sample Paper-2022