Aparallel plate capacitor has circular plates with diameter d=21.5 cm separated by a distance d=1.75 mm. when a potential difference of av = 12.0 v is applied across the plates, what is the energy density between the plates? a) u = 0.0132 j/cm b) u = 52.0 j/cm c) u=127j/cm d) - 208 j/cm

Explanation:

Given

Diameter(D)=21.5 cm

distance between plate=1.75 mm

and we know capacitance is

and we know charge is

Q=CV

and charge density (

Electric field(E)

Energy density

Energy desity

Energy desity

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.