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In the figure, eight particles form a square, with distance d between adjacent particles.




What is the electric potential at point P at the center of the square if the electric potential is zero at infinity? Use qd and ε0.

 

I don't have any idea how i am supposed to input it. I got -4q/ 4*pi*e0*2d and I tried 0. Any ideas and is that answer of mine wrong?

physics
 Aug 20, 2014

Best Answer 

 #2
avatar+1314 
+5

Please explain this information for me--> 

Question 7

The figure shows four pairs of charged particles. For each pair, let V = 0 at infinity and consider Vnet at points on the x axis.

 
 
Incorrect answer.Your answer is incorrect.  Try again.
  

For which pairs is there a point at which Vnet = 0 between the particles?


Entry field with incorrect answer now contains modified data

(1)

(2)

(3)

(4)

None
 

 

 
 

Incorrect answer.Your answer is incorrect.  Try again.
  

For which pairs is there a point at which Vnet = 0 to the right of the particles?


Entry field with incorrect answer now contains modified data

(1)

(2)

(3)

(4)

None
 

 

 
 

Correct answer.Your answer is correct.
  

At such a point is Upper E Overscript right-arrow EndScripts Subscript net due to the particles equal to zero?


Entry field with correct answer

Yes

No
 
 



Correct answer.Your answer is correct.
  

For each pair, are there off-axis points (other than at infinity) where Vnet = 0? Mark the pairs where this is true.


Entry field with correct answer

(1)

(2)

(3)

(4)

None of the pairs exhibit this quality.
 Aug 20, 2014
 #1
avatar+1314 
+5

Unsure about this. It is similar to last weeks question. I don't know what is being asked when I read it. 

A spherical conducting shell has a charge of -37 μC on its outer surface and a charged particle in its hollow. If the net charge on the shell is -31 μC, what is the charge (a) on the inner surface of the shell and (b) of the particle?

(a)NumberUnits   ° (degrees) This answer has no units m kg s m/s m/s^2 N J W N/m A V μC N/C C/m C/m^2 C/m^3 N·m^2/C
(b)NumberUnits   ° (degrees) This answer has no units m kg s m/s m/s^2 N J W N/m A V μC N/C C/m C/m^2 C/m^3 N·m^2/C
 Aug 20, 2014
 #2
avatar+1314 
+5
Best Answer

Please explain this information for me--> 

Question 7

The figure shows four pairs of charged particles. For each pair, let V = 0 at infinity and consider Vnet at points on the x axis.

 
 
Incorrect answer.Your answer is incorrect.  Try again.
  

For which pairs is there a point at which Vnet = 0 between the particles?


Entry field with incorrect answer now contains modified data

(1)

(2)

(3)

(4)

None
 

 

 
 

Incorrect answer.Your answer is incorrect.  Try again.
  

For which pairs is there a point at which Vnet = 0 to the right of the particles?


Entry field with incorrect answer now contains modified data

(1)

(2)

(3)

(4)

None
 

 

 
 

Correct answer.Your answer is correct.
  

At such a point is Upper E Overscript right-arrow EndScripts Subscript net due to the particles equal to zero?


Entry field with correct answer

Yes

No
 
 



Correct answer.Your answer is correct.
  

For each pair, are there off-axis points (other than at infinity) where Vnet = 0? Mark the pairs where this is true.


Entry field with correct answer

(1)

(2)

(3)

(4)

None of the pairs exhibit this quality.
Stu Aug 20, 2014

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