Question

Total: / 30 1212 / 100 312 W 4.12 312 W- 1. The equivalent resistance of the four resistors shown above is: a) 0.167.12 b) 0.250 22 c) 0.333.2 d) 1.5 12 e) 2.0.2 2. A battery is manufactured with an emf of 40.0 V and an internal resistance of 5.0 N. When the battery is connected to a 15.0 N resistor, what is the voltage difference across the 15.0 2 resistor? a) 10 V b) 20 V c) 30 V d) 40 V e) Cannot be determined 3. A resistor and capacitor are connected in series to a voltage source at time t = 0. The voltage across the capacitor: a) Remains constant over time b) Increases over time c) Decreases over time

Answer 1

501":- © 122 32 An 3u 1 2+4 12ri & 4 22 are in parallel. There quivalent resistance R' = 12x4 32 This Ŕ & 3r are in series :. R" = R'+3 = 3+3=62 Now This Gul & 3r are are in parallel Hence 6x3 673 [Rei=22 option @ is correct. C Reg = 22

152 DATE: MAS Current i= 40 ZA 15+15 4ov 52 i's Voltage across is n' V = 2x 15 = 30 Volt option 4. In case of charging of an Rc circuit : Vc = Vo (i-e the) '. Voltage across capacitor increases over time ophicon