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26 Nov 2019

two capacitors have the same plate separation but one hassquareplates and the other has circular plates. The square platesare alength L on each side and the diameter of the circular plateis l.the capacitors have the dame capacitance because theycontaindifferent dielectric materials. The dielectric materials.Thedielectric constant of the material between the square plateshasvalue of k=3.00. what is the dielectric constant k of thematerialbetween the circular plates

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A capacitor is constructed from two square, metallic plates of sides l and separation d. Charges +Q and -Q are placed on the plates, and the power supply is then removed. A material of dielectric constant   is inserted a distance x into the capacitor as shown in Figure P25.49 (page 690). Assume d is much smaller than x. 

(a) Find the equivalent capacitance of the device. 

(b) Calculate the energy stored in the capacitor.

(c) Find the direction and magnitude of the force exerted by the plates on the dielectric.

(d) Obtain a numerical value for the force when , assuming , the dielectric is glass (   ). and the capacitor was charged before the dielectric was inserted.

Suggestion: The system can be considered as two capacitors connected in parallel. 

A capacitor is constructed from two square plates of sides l and separation d. Charges and are placed on the plates, and the power supply is then removed. A material of dielectric constant Îș is inserted a distance x into the capacitor, as in Figure P25.49 (page 690). Assume d is much smaller than x.

a) Find the equivalent capacitance of the device.

b) Calculate the energy stored in the capacitor.

c) Find the direction and magnitude of the force exerted on the dielectric.

d) Obtain a numerical value of the force when , assuming that , , the dielectric is glass , and the capacitor was charged to before the dielectric was inserted.

Suggestion: The system can be considered as two capacitors connected in parallel.

A parallel-plate capacitor has plates of area A = 7.00 X 10-2 m2? separated by distance d = 2.00 X 10-4 m. (a) Calculate the capacitance if the space between the plates is filled with air. What is the capacitance if the space is filled half with air and half with a dielectric constant k = 3.70 as in (b) Figure a, and (c) Figure b? (Hint: In (b) and (c), one of the capacitors is a parallel combination and the other is a series combination.)

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