Aparallel-plate capacitor has a plate area of 0.3 m2 and a plate separation of 0.1 mm. if the charge on each plate has a magnitude of 5 × 10–6 c then the force exerted by one plate on the other has a magnitude of about:

4.72 N

Explanation:

The charge density across each plate is given by:

where

is the charge on each plate

is the area of each plate

Solving,

The force exerted by one plate on the other is given by:

where

is the charge on each plate

is the surface charge density

is the vacuum permittivity

Substituting,

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr