Question Number 77889 by peter frank last updated on 11/Jan/20
$${Show}\:{that}\:{the}\:{capacitance} \\ $$$${of}\:{two}\:{concentric}\:{sphere} \\ $$$${that}\:{have}\:{a}\:{and}\:{b}\:{as} \\ $$$${respective}\:{radii}\:{of}\:{the} \\ $$$${inner}\:{and}\:{outer}\:{sphere} \\ $$$${is}\:\frac{\mathrm{4}\pi\in_{{o}} {ab}}{{b}−{a}} \\ $$
Commented by mr W last updated on 18/Jan/20
Commented by peter frank last updated on 18/Jan/20
$${thank}\:{you} \\ $$