For an electric field passing through a flat surface perpendicular to it, the electric flux of the..

Nonadaptive Digital SAT Practice Test 5, Section 2, Module 2, Question 27:

For an electric field passing through a flat surface perpendicular to it, the electric flux of the electric field through the surface is the product of the electric field's strength and the area of the surface. A certain flat surface consists of two adjacent squares, where the side length, in meters, of the larger square is 3 times the side length, in meters, of the smaller square. An electric field with strength 29.00 volts per meter passes uniformly through this surface, which is perpendicular to the electric field. If the total electric flux of the electric field through this surface is 4,640 volts • meters, what is the electric flux, in volts • meters, of the electric field through the larger square?

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[azanahmad]

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[KiraSoloveva-qyti]

Hi, thank you very much for the explanation of this task, your channel is amazing and helps a lot when preparing for sat! I have one question related to this particular task, the description says that "electric faux is the product of the electric field's strength and the area of the surface". If the strength of the electric field is 29 volts per Meter, why do we multiply 29 and 10a(2), and not 841 (square of 29) and 10a(2), since the surface area is in square meters and strength is in volts per Meter? I believe that I am misunderstanding some part of the task, but not sure what exactly 😅 Thank you again!

[Hi-xyox]

Great details! Thanks so much for the thorough explainations!

[OverclockingCowboy]

SAT gave a lot of dummy information here to make people do unnecessary work. They gave the electric flux as the product of electric field and surface area. They also gave the electric field as 29 v/m. All you have to do for this problem is to ratio the large area to the total area.

4640 (9x/10x) = 4176

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[fortnitesweatkid]

do you think this question will appear on the test?