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## Main Question or Discussion Point

I'm in need of help. I need the formulas for total-electric-flux enclosed for a final exam *tommorow. My teacher (nice guy but total slacker) never did any handouts, and I am not the quickest to catch on when he tried to explain in about 20 minutes the concept of surface integrals. I was just out of calc II and had absolutely no experience with cylindrical or spherical coordinates.

????????????????????????

Spherical surface:

flux enclosed =∫[0,2π]∫[0,π](sin0)r^2

infinite plane

flux enclosed =∫[]∫[]

Long thin wire

flux enclosed =∫[0,c]∫[0,2π]

?????????????????????????????????

I am the only student in calc. physics mixed with a group of non-calc students. Surface intergrals did not come up in calc III until about one week ago, and now I'm under pressure. The physics teacher made it clear 'he would make it easy on me', but I just needed to be able to calculate flux enclosed with E and dA given in the cases of:

1) infinite flat sheet

2) point charge/ spherical surface

3) long thin wire

I just need to be able to set up the integrals.

????????????????????????

Spherical surface:

flux enclosed =∫[0,2π]∫[0,π](sin0)r^2

infinite plane

flux enclosed =∫[]∫[]

Long thin wire

flux enclosed =∫[0,c]∫[0,2π]

?????????????????????????????????

I am the only student in calc. physics mixed with a group of non-calc students. Surface intergrals did not come up in calc III until about one week ago, and now I'm under pressure. The physics teacher made it clear 'he would make it easy on me', but I just needed to be able to calculate flux enclosed with E and dA given in the cases of:

1) infinite flat sheet

2) point charge/ spherical surface

3) long thin wire

I just need to be able to set up the integrals.

**But I can not find the formulas.**I'm in desperate need of just the integrals without a lot of extranious information. I tried at the top to fill in what I could.