An air-filled paralel-plate capacitor has plates of area 2.20 cm2 separated by 2

Question

An air-filled paralel-plate capacitor has plates of area 2.20 cm2 separated by 2.00 mm. The capacitor is connected t (a) Find the value of its capacitance. 0.947 Your response is within 10% of the correct value. This may be due to roundoff error, or you could ha results to at least four-digit accuracy to minimize roundoff error. pF (b) What is the charge on the capacitor? 17.046 of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry results to at least four-digit accuracy to minimize roundoff error, p (c) What is the magnitude of the uniform electric fleld between the plates? 9000 V/m Need Help?

Explanation / Answer

(A) C = e0 A / d

C = (8.854 x 10^-12)(2.20 x 10^-4) / (2 x 10^-3)

C = 0.9739 x 10^-12

Ans: 0.9739 pF

(B) Q = C V = 1.753 x 10^-11 C = 17.53 x 10^-12 C

Ans: 17.53 pC

(C) E = V / d = (18) / (2 x 10^-3)

= 9000 V./m

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