Please answer both questions An air-filled parallel-plate capacitor has plates o
ID: 1533897 • Letter: P
Question
Please answer both questions
An air-filled parallel-plate capacitor has plates of area 2.90 cm2 separated by 1.70 mm. The capacitor is connected to a(n) 13.0 V battery.
(a) Find the value of its capacitance.
pF
(b) What is the charge on the capacitor?
pC
(c) What is the magnitude of the uniform electric field between the plates?
N/C
2.
Given a 3.00 F capacitor, a 6.50 F capacitor, and a 8.50 V battery, find the charge on each capacitor if you connect them in the following ways.(a) in series across the battery
(b) in parallel across the battery
Explanation / Answer
a) C = Aeo/d
= 2.9*10^-4*8.85*10^-12 / 1.7*10^-3
= 1.51*10^-12 = 1.51 pF
b) charge CV 1.51* 13 = 19.6 pC
c) EF = Q/Aeo
= 19.6*10^-12 / (2.9*10^-4*8.85*10^-12)
= 7647 N /C