Which of the following is not a capacitance?
A) $\frac { \varepsilon _ { 0 } A } { d }$
B) $\frac { \kappa \varepsilon _ { 0 } A } { d }$
C) $\frac { a b } { k _ { e } ( b - a ) }$
D) $\frac { \ell } { 2 k _ { e } \ln ( b / a ) }$
E) $\frac { k _ { e } \varepsilon _ { 0 } A } { d }$

Question

Quizplus · Accepted Answer

The expression in choice E includes $ k_e $, which is the Coulomb's constant, and is not part of the standard formula for capacitance. Capacitance formulas typically involve permittivity ($ \varepsilon_0 $), area ($ A $), and distance ($ d $), or geometric factors, but not $ k_e $.

Which of the Following Is Not a Capacitance? A) ε0Ad\frac { \varepsilon _ { 0 } A } { d }dε0​A​

Which of the Following Is Not a Capacitance?
A) $\frac { \varepsilon _ { 0 } A } { d }$