9.) For the circuit in the previous problem, the resistors used had values of; R
ID: 2036602 • Letter: 9
Question
9.) For the circuit in the previous problem, the resistors used had values of; R1 = 5.20 k?, R2 = 760 ?, R3 = 8.20 k?, and ?1 = 12.0 V, ?2 = 1.2 V, ?3 = 12.0 V.
Find the value for the current i1 in the circuit.
11.) If the emf of the battery is 23.0 Volts and the resistance of each light bulb is 19.0 ?, calculate the total power output of the brighter circuit.
12.) Three capacitors, each 21.0 ?F, are connected in series to a 17.5 Volt battery. Find the total energy stored in the circuit.
13.) An RC series circuit, with R = 7.20 M?, C = 9.60 ?F, is connected to a battery with an emf of 6.50 Volt (assumed to have no internal resistance). How long will take to build a charge of 49.92 ?C on the capacitor plates?
Explanation / Answer
12.
In series circuit
1/Ceq = 1/C1 + 1/C2 + 1/C3
C1 = C2 = C3
Ceq = C1/3 = 21.0 = 7.0 uF
Energy stored will be
U = 0.5*Ceq*V^2
U = 0.5*7*10^-6*17.5^2
U = 1.07*10^-3 J = 1.07 mJ
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