A tetrahedron has an equilateral triangle base with 20-cm-long edges and(adsbygoogle = window.adsbygoogle || []).push({});

three equilateral triangle sides. The base is parallel to the ground and a

vertical uniform electric ﬁeld of strength 200 N/C passes upward through

the object.

(a) What is the electric ﬂux through the base?

(b) What is the electric ﬂux through each of the three sides?

ATTEMPT:

for part a i used flux=EA. for A i used BH/2 and got .0173. i multiplied that by 200 and got3.46 m^2/C. can someone verify this is correct?

for part b i just divided that number by 3 because the total flux in the sides must equal that of the base so i got-1.1533m^2/C. i think the sign is negative because it must have the opposite sign of the base. is this right?

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# Simple electric flux through tetrahedron problem

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