May be this is easier than you think

Electricity and Magnetism Level 3

A cube of side \(a\) and uniform charge density \(\rho\) has electric field \(E\) at one of its corners.

A cube of side \(\dfrac a2\) is removed from that corner. The electric field at this point is now \(E_2\). Find \(\dfrac{E_2}E\).

\[ \frac18\] \[ \frac14\] \[\frac38\] \[\frac12\] \[ \frac58\] \[\frac78\] \[1\] None of these choices

Excel in math and science