Question
(a) Find the voltage near a 10.0 cm diameter metal sphere that has 8.00 C of excess positive charge on it. (b) What is unreasonable about this result? (c) Which assumptions are responsible?
1. $1.44 \times 10^{12} \textrm{ V}$
2. This is unreasonably high. Sparks would fly through the air since the dielectric strength of air is $3 \times 10^6 \textrm{ V/m}$
3. The sphere can not accumulate $8.00 \textrm{ C}$ of charge.
Solution Video