How much charge is on each plate of a 5.00 mu F capacitor when it is corrected t

Question

How much charge is on each plate of a 5.00 mu F capacitor when it is corrected to a 14.0-V battery? mu C In this same capacitor is connected to a 2.50. v battery. what charge is stored? Two conductors having net charges of +20.0 mu C and -20.0 mu C have a potential difference of 20.0 V between them. Determine the capacitance of the system F what in the potential difference between the two conductors the if the charges on each are increased to +4000.0 mu C and -400.0 mu C? An air filled parallel plate capacitor has plates of area 240 cm^2 separated by 1.00 mm. The capacitor is corroded to a 3.0-V battery. Find the value of its capacitance. PF what is the charge on the capacitor?

Explanation / Answer

part 1 )

a)

Q = CV

Q = 5 * 10^-6 * 14 = 70 x 10^-6 C = 70 uF

b )

Q = CV

Q = 5 uF * 2.5 = 12.5 uC

part 2 )

a )

C = Q/V

Q = 20 * 10^-6 C

V = 20 V

C = 1 x 10^-6 F

b )

V = Q/C

Q = 400 * 10^-6 C

C = 1 x 10^-6

V = 400 V

part 3 )

C = eoA/d

A = 2.4 cm^2 = 2.4 x 10^-4 m^2

d = 1mm = 1 x 10^-3 m

eo = 8.85 x 10^-12

C = 2.124 x 10^-12 F = 2.124 pF

b )

Q = CV

Q = 6.372 x 10^-12 C

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