The plates of a parallel plate capacitor are separated at 1.0 mm apart. What is the capacitance in air if the plate is 10 cm?? What is the charge in each plate if a potential difference of 100 V is applied?

University Physics Volume 2
18th Edition
ISBN:9781938168161
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Chapter8: Capacitance
Section: Chapter Questions
Problem 64AP: A capacitor is made from two flat parallel plates placed 0.40 mm apart. When a charge of 0.020C is...
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Solve the following capacitance problems and show your solution:

2. A parallel plate capacitor has square plates of side 5 cm and separated by a distance of 1 mm.
(a) Calculate the capacitance of this capacitor. (b) If a 10 V battery is connected to the capacitor,
what is the charge stored in any one of the plates? (The value of ɛo = 8.85 x 10-12 Nm² C-²)
Solution
(a) The capacitance of the capacitor is
E,A_ 8.85x1012 x25×10
C= =
d
1x10
= 221.2 x10-13 F
C = 22. 12 x10-12
F = 22 .12 pF
(b) The charge stored in any one of the plates is Q = CV, Then
= 22.12 x10-12 x10
= 221.2 x10-12
C = 221.2 pC
Transcribed Image Text:2. A parallel plate capacitor has square plates of side 5 cm and separated by a distance of 1 mm. (a) Calculate the capacitance of this capacitor. (b) If a 10 V battery is connected to the capacitor, what is the charge stored in any one of the plates? (The value of ɛo = 8.85 x 10-12 Nm² C-²) Solution (a) The capacitance of the capacitor is E,A_ 8.85x1012 x25×10 C= = d 1x10 = 221.2 x10-13 F C = 22. 12 x10-12 F = 22 .12 pF (b) The charge stored in any one of the plates is Q = CV, Then = 22.12 x10-12 x10 = 221.2 x10-12 C = 221.2 pC
Direction: Answer the following questions.
1. The plates of a parallel plate capacitor are separated at 1.0 mm apart. What is the capacitance
in air if the plate is 10 cm?? What is the charge in each plate if a potential difference of 100 V is
applied?
2. (a) Calculate the capacitance of a capacitor whose plate are 20 cm x 3.0 cm and are
separated by a 1.0 mm gap. (b) what is the charge on each plate if the capacitor is connected
to 15 V battery?
Transcribed Image Text:Direction: Answer the following questions. 1. The plates of a parallel plate capacitor are separated at 1.0 mm apart. What is the capacitance in air if the plate is 10 cm?? What is the charge in each plate if a potential difference of 100 V is applied? 2. (a) Calculate the capacitance of a capacitor whose plate are 20 cm x 3.0 cm and are separated by a 1.0 mm gap. (b) what is the charge on each plate if the capacitor is connected to 15 V battery?
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