A homemade capacitor is assembled by placing two 9-in. pie pans 7cm apart and co

ID: 1270245 • Letter: A

Question

A homemade capacitor is assembled by placing two 9-in. pie pans 7cm apart and connecting them to the opposite terminals of a 6-V battery.

a) Estimate the capacitance.

Express your answer using one significant figure.

b) Estimate the charge on each plate.

Express your answer using one significant figure.

c) Estimate the electric field halfway between the plates.

Express your answer using one significant figure

d) Estimate the work done by the battery to charge the plates.

Express your answer using one significant figure.

e) Which of the above values change if a dielectric is inserted?

Which of the above values change if a dielectric is inserted?

Capacitance. Charge. Electric field. Work done by the battery.

The distance between the plates d = 7cm

Diameter of the pan D = 9in

= 9*2.54*10-2 m

Thus, the area of the pans = ? D2 / 4

The capacitance is calculated using C =? oA / d

b) The charge on easch plate Q =CV where
the applied voltage V = 6V

c) The Electric field between the plates E = Q / ? oA

d) The Work done by the battery W = (1/2)CV2

d) If a dielectric is inserted, thecapacitance, charge and the Energy stored will change.

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.