Question

What is the net electric flux through the torus(i.e.,doughnut shape) of the figure(Part A 1figure)?

Answer 1

From Gauss law ,Net electric flux = ( 1/ ε o ) ( netcharge )=[1 / ( 8.85 * 10 ^-12 C ² / N - m² ) ( -1 nC + 100 nC )=0.113 * 10 ¹² N - m ² / C² * 99 nC=0.113* 10 ¹² N - m ² / C² * 99 * 10 ^-9 C=11186.44 N - m ²/ C

Answer 2

That doesn't calculate to the right answer....
the real way :
=
=-113