Question

I

If the emf in the circuit shown is 9 V, what is the current in the 20 12 resistor? 202 15 30 E WWW 0.14 A 0.65 A 0.30 A 270 A 130 A

Answer 1

Given Resistance Eme in circuity (E = 9V R = 202 R₂ = 152 R3=302 find current in zon resistor concept used for solving problem 1) we know, Ale to ohm's V= I. R = I= law Ri Rz Ra 2) 3) Resistance in parallel Hu Rrit WR3 Resistance in series Equivalent Resistance is Req = R1 + R₂ + R3 th Equivalent Resistance Itlt/ Ri R R Req Req The the Iz Now E 1 Rizal R23=102 Iz R2 and R3 are in parallel, so their equivalent Resistance is + 1 = R23 30 30 123 R23 = 102 / t 15 2+1 who 30 30

Now RI 오 F Rq3 Req are in series their equivalent R and R23 is Req = RitR23 S 20 + 10 Req= 302 from ohm's law I = v Req g I = 30 I= 0.3 A option -