(1) Find the equivalent resistance of the circuit shown in Fig. 1. (2) Find the equivalent capacitance of the circuit shown in Fig. 2. (3) Find the current flowing through resister R3 for the circuit shown in Fig. 3. (4) A battery, switch, resister and capacitor are connected in series as shown in (Fig. 4). When the switch is closed how much turrent flows through the circult at 2 s? (5) 10 MeV protons and launched into a space that has uniform magnetic field of 2.0 T at right angles to the direction of the proton motion. What is radius of the proton path? (6) A parallel plate capacitor has a plate separation of 2 mm and the plate area is 80 cm. The capacitor plates are fully charged by connecting to a 100 V battery. What is the energy stored in the capacitor? (7) What is the capacitance for the capacitor shown in Fig. 5? (8) A 1000 W, 220 V water heater was turned for 6 hours. How much charged went through it? R6 nun RS B 2 = R = R3 = Rq R R3 Fig. 1. C D + Rs = 1022 R3 I 20v; R = R = 202 10V R3 = 402 Fig. 3 for hours. How much charged wel CS .B C5= C=C = C = C4 = 2 F Fig. 2 Fig. 5 C R ww V = 20V, R= 202 C = 20 F Fig. 4 -K3 A13 d = 2mm A = 90 cm K = 2.0 K = 115 K3=2.5