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sphyics
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1. A circular metal plate of radius 10cm is given a charge of 20 microCoulomb. Determine the outward pull on the plate, k=1
i can solve the problem by using the equation F= [sigma ^2]A / 2 epsilon* K and finding [tex]\sigma[/tex] = Q/A {where A= area of surface(plate), Q = charge}
My problem:
to find area of plate i used the equation pi *r^2; or do i need to consider 2[tex]\pi[/tex]r^2 as plate have two surfaces.
i can solve the problem by using the equation F= [sigma ^2]A / 2 epsilon* K and finding [tex]\sigma[/tex] = Q/A {where A= area of surface(plate), Q = charge}
My problem:
to find area of plate i used the equation pi *r^2; or do i need to consider 2[tex]\pi[/tex]r^2 as plate have two surfaces.
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