Sunday
December 21, 2014

Homework Help: Physics

Posted by P on Wednesday, March 13, 2013 at 12:19am.

Three parallel plate capacitors (C1,C2 and C3 ) are in series with a battery of 100 V. C1=2500 micro Farad; C2=2C1 , C3=3C1 .

(a) What is the potential difference over each capacitor and how much charge is on each capacitor?

Across C1 :V1 (in Volts) =

incorrect

Q1 (in C) =

incorrect

Across C2 :V2 (in Volts) =

incorrect

Q2 (in C) =

incorrect

Across C3 : V3 (in Volts) =

incorrect

Q3 (in C) =

incorrect

(b) We now connect a 4th parallel plate capacitor ( C4=4C1 ) to the battery. One side of the capacitor is connected to the negative side of the battery, the other side is connected to the positive side of the battery.

What is the potential difference over each of the 4 capacitors and what is the charge on each?

Across C1 : V1 (in Volts) =

incorrect

Q1 (in C) =

incorrect

Across C2 : V2 (in Volts) =

incorrect

Q2 (in C) =

incorrect

Across C3 : V3 (in Volts) =

incorrect

Q3 (in C) =

incorrect

Across C4 : V4 (in Volts) =

incorrect

Q4 (in C) =

incorrect

(c) We make one more change: We still have our 4 capacitors as above, but we now place a dielectric (K = 3) between the plates of the 4th capacitor.

What is the potential difference across C4 and what is the charge on it?

Across C4 : V4 (in Volts) =

incorrect

Q4 (in C) =

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