V а b R R, In the circuit above, the internal resistance of the emf source is r = 1.3 N and the external resistors have resistances R1 = 5 N and R2 = 4N. In which of the resistors (r, R1 or R2) the largest power is dissipated? R2 In both R1 and R2 the same amount R1

15V a. + AM 10.2. 4 t=0 um 45² 652 im + V 1 ic (t) b. Assume switch has been closed for Find a mathematical expression for Vc it capacitor is initially uncharged and the switch is closed at t = 0. Sketch Vc lt). 20m F a long time. opening Fird an expression for ic immediately after the switch and sketch it.

In a heart pacemaker, a pulse is delivered to the heart 84 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 3.9 ✕ 106 Ω. One pulse is delivered every time the fully charged capacitor loses 63.2% of its original charge. What is the capacitance of the capacitor? F

A small circuit consists of a resistor in series with a capacitor, as shown. = 32.0 V The capacitor stores 23.7 mJ of energy after a Vbat battery has been connected to the circuit for a long time. R Then, the capacitor discharges half of this stored energy in V, bat R, exactly 3.17 s when the battery is removed and replaced by a RL = 29600 2 load. C, Determine the value of the capacitance C in microfarads and resistance R in ohms. Ω C = µF R1 =

Consider following circuit with R1 = 62 Ω, R2 = 11 Ω, R3 = 62 / 10 Ω, R4 = 11/10 Ω and and ξ=11 V f. Calculate the potential difference of R2 ? g. Calculate the potential difference of R3 ? h. Calculate the heat dissipation of R2 resistor

Q7.1 The circuit shown below is an RC circuit that consists of R1 = 100 kn, R2 = 200 kn, R3 = 300 kn, C = 5.00 μF, and E = 9.00 V. When the switch is closed at t = 0, the capacitor starts from an uncharged state. The following inquiries relate to the performance of the circuit. a. What is the RC circuit's time constant? b. When will the capacitor be 80% charged? c. At that point, what is the current passing through the R3 resistor? E S R₁ R3 R₂ www