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  • A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q. Is the electric field inside a cavity (with no charge) zero, even if the shell is not spherical but has any irregular shape? Explain.

2.15 A spherical conducting shell of inner radius r1 and outer radius r2  has a charge Q. 

(b)Is the electric field inside a cavity (with no charge) zero, even if the shell is not spherical, but has any irregular shape? Explain. 

Answers (1)

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Yes, the electric field inside the cavity is zero even when the shape is irregular and not the sphere. Suppose a Gaussian surface inside the cavity, now since there is no charge inside it, the electric flux through it will be zero according to the guess law. Also, all of the charges will reside on the surface of the conductor so, net charge inside is zero. hence electric field inside cavity is zero. 

Posted by

Pankaj Sanodiya

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