Physics equations/19-Electric Potential and Electric Field/Q:UsingGaussLaw


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1 A cylinder of radius, R, and height H has a uniform charge density of  . The height is much less than the radius: H << R. The electric field at the center vanishes. What formula describes the electric field at a distance, z, on axis from the center if z > H/2?

 
b)  
c)  
d) none of these are correct
e)  

2 A cylinder of radius, R, and height H has a uniform charge density of  . The height is much less than the radius: H << R. The electric field at the center vanishes. What formula describes the electric field at a distance, z, on axis from the center if z < H/2?

 
b) none of these are correct
c)  
d)  
e)  

3 A sphere has a uniform charge density of  , and a radius or R. What formula describes the electric field at a distance r > R?

none of these are correct
b)  
c)  
d)  
e)  

4 A sphere has a uniform charge density of  , and a radius equal to R. What formula describes the electric field at a distance r < R?

 
b)  
c) none of these are correct
d)  
e)  

5 A cylinder of radius, R, and height H has a uniform charge density of  . The height is much greater than the radius: H >> R. The electric field at the center vanishes. What formula describes the electric field at a distance, r, radially from the center if r < R?

 
b)  
c)  
d) none of these are correct
e)  

6 A cylinder of radius, R, and height H has a uniform charge density of  . The height is much greater than the radius: H >> R. The electric field at the center vanishes. What formula describes the electric field at a distance, r, radially from the center if r > R?

 
b)  
c)  
d) none of these are correct
e)