I have some questions on my practice final that I am confused on solving, could

Question

I have some questions on my practice final that I am confused on solving, could someone please walk me thorugh the steps?

16) For the capacitor configuration shown below, if all of the capacitors have the same value of C, what is the equivalent capacitance of the four capacitors?

Figure for Question 1:

21) Given the diagram below, what is the voltage across the battery ?

C) The energy will be halved. D The energy is quadrupled E) The energy is quartered 16. For the capacitor configuration shown to the right, if all of the capacitors have the same value of C, what the equivalent capacitance of the four capacitors? A) 4C B) 2.5C C) 1C D) 0.4C E 3C 17. If VA VB 50 V, how much energy is stored in the 54 HF capacitor? 36 uF B) 28 mJ C) 13 mJ E) 17 mJ 72 uF

Explanation / Answer

here,

16)

C2 and C3 are in parallel , their equivalent capacitance , C1' = C1 + C3 = 2 C

C1 , C1' and C4 are in series ,let the equivalent capacitance be Ceq

1/Ceq = 1/C + 1/C + 1/2C

Ceq = 0.4 * C

the correct option is D) 0.4 C

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