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/sci/ - Science & Math

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12696263 No.12696263 [Reply] [Original]

What is the magnitude of vector dA when talking about electric flux?

>> No.12696375

Depends on the problem. You need to integrate across the surface area.

>> No.12696395

>>12696375
I don't get why dA is considered a vector when you're integrating the area

>> No.12696452
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12696452

>>12696395
You're using an electronic device to view this comment, right. Your screen has a finite area, which is just a numerical value. Now imagine Pepe is pointing a gun at you. He fires the gun. Oops, you're dead. But what happens if you rotate your screen so that you can't see this comment anymore? Pepe fires the gun. You're safe. That's how area is a vector: the direction it's facing matters for the flow of objects.

>> No.12696916

Integrate.

>> No.12697575

>>12696452
Kek

>> No.12697937

>>12696452
Beautifully done.