A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is parallel to the ground, and a vertical uniform electric field of strength 260N/C passes upward through the tetrahedron.1. What is the electric flux through the base?2. What is the electric flux through each of the three sides?

Answer

The electric flux at the base is,  

Here E is the strength of the electric field, and ais the side.  

Flux at the base is equal to

Tetrahedron does not enclose change. So, Total flux is equal to zero.

Now,

Flux on the three side

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.