$11-7$ An initially uncharged metallic sphere with radius of $5$ cm has a charge of

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$1\mathrm{.}17$ pts

$-15$ C placed on the outside of the metallic sphere. What total number of electrons does the charge which resides on the outer surface of the metallic sphere represent?

$9\mathrm{.}4$ x $1013$

$1\mathrm{.}1$ x $1014$

$3\mathrm{.}8$ x $1013$

$1\mathrm{.}9$ x $1014$

$$There is no charge on the outer surface of the conducting sphere. The excess charge will move in and spread uniformly throughout the conductor.