A cube with side length l=9.16 cml=9.16 cm is placed in a constant electric field described by E =6.84×106j^ N/C.

Sunday, 12 August 2018

4:06 PM

Untitled picture.png Machine generated alternative text:
Question: 
A cube with side length I 
9.16 cm is placed in a constant electric field described by E 
= 6.84 x NIC. 
Figure 1 _ A cube of side length a sits at the origin of the x, y-axis. A constant electric tield is applied in the y—directiom Side I denotes the side where z = 0 (pink with red edges) and Side 2 
is the side where y = I (pale blue). 
part 1) 
What is the flux through the surface 1? Note that surface 1 has vertices at the origin, li, li + Ij and Ij . 
N m2/C 
Your last answer was interpreted as follows: 0 
part 2) 
What is the electric flux through surface 2? Note that surface 2 has veäices at Ij , li + Ij , li + Ij 
and Ij — 
= 57400 
N m2/C 
Your last answer was interpreted as follows: 57400 
part 3) 
What is the net electric flux tnrougn the entire cube? 
= 57400 
N m2/C 
Your last answer was interpreted as follows: 57400 

Untitled picture.png Machine generated alternative text:
Your answer is partially correct Note: Your answers should be correct to 3 significant figures. 
Feedback tor Part 1) 
You have correctly answered this part 
Marks for this submissiom 0.33/0.33. 
Feedback tor Part 2) 
You have correctly answered this part 
Marks for this submissiom 0.33/0.33. 
Feedback tor Part 3) 
As there is no charge enclosed in this surface the net flux through the surface is zero. Gauss's law tells us that 
so qenc = 0 tells uS = 0. 
Marks for this submissiom 0.00/0.33. This submission attracted a penalty of 0.11 
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Untitled picture.png Machine generated alternative text:
Your answer is partially correct Note: Your answers should be correct to 3 significant figures. 
Feedback tor Part 1) 
You have correctly answered this part 
Marks for this submissiom 0.33/0.33. 
Feedback tor Part 2) 
You have correctly answered this part 
Marks for this submissiom 0.33/0.33. 
Feedback tor Part 3) 
As there is no charge enclosed in this surface the net flux through the surface is zero. Gauss's law tells us that 
so qenc = 0 tells uS = 0. 
Marks for this submissiom 0.00/0.33. This submission attracted a penalty of 0.11

 

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