1) 2) What is V(b), the electric potential at the inner surface of the conductin
ID: 2126705 • Letter: 1
Question
1)
2)
What is V(b), the electric potential at the inner surface of the conducting shell? Define the potential to be zero at infinity.
3)
What is V(a), the electric potential at the outer surface of the insulating sphere? Define the potential to be zero at infinity.
4)
What is V(c) - V(a), the potentital differnece between the outer surface of the conductor and the outer surface of the insulator?
5)
A charge Q = 0.0326?C is now added to the conducting shell. What is V(a), the electric potential at the outer surface of the insulating sphere, now? Define the potential to be zero at infinity.
Explanation / Answer
Volume of inner sphere
= (4/3)*pi*R^3
= (4/3)*pi*5.5^3 cm^3
= 697 cm^3
charge density ? = -113 ?C/m^3;
Charge on inner sphere
= - 697 *113 mC
= 78.8 C
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