Question

45) Two resistors with resistances of 5.02 and 9.00 are connected in parallel. A 4.0-12 resistor is then connected in series with this parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through (a) the 4.0-22 resistor and (b) the 5.0-92 resistor? 58) If V = 40 V and the battery is ideal, what is the potential difference across R1 in the figure? R; = 102 Rz=2022 ? R =3 2017 w R4 = 30 12 Chapter 23 Sample Problems Example 23.1: A 60.0 pF and a 30.0 pF capacitor are connected in series with a 12 Volt battery. Find: a) the total capacitance; b) the charge on each capacitor (same for both). Example 23.2: A 3.42 nF capacitor is connected to a 36.0 ohm resistor, a 6 volt battery and an open switch. A) Find the time constant for the RC circuit. B) What is the initial current through the battery when the switch is closed? C) After a long time, what is the potential difference across the capacitor, and across the resistor?

Answer 1

5,9 are in paralell 1 R5,9 = 5x9 » 45 3 3.242 42 in series with RS, 9 1. Raq z4+3.214 = 70 214.2 5+9 h 2 6 - Ilim-s 0.8317 A 7 7-214 0.8317 4 This I divided between 5 and a b) Ira Ixq0-8317 x 9 6.5346 A q+5 Is Scanned with CamScanner