Question

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. ​

Answer 1

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Answer 2

The statement is Both the electric potential and electric field achieve a maximum magnitude at B. ​

Explanation:

A solid spherical conductor has charge $+Q$ and radius. It is surrounded by a solid spherical shell with charge $-Q$ inner radius $2R$ and outer radius $3R$.

$E_{p}=\frac{K0}{R^{2}}$

$V_{A}=V_{B}=\frac{K0}{R}$

$V_{in}=V_{surface}$

$V_{in}=\frac{Ko}{R}$

The both the electric field potential.