Question

please do all parts a,b,c,d,and e

V1 = 8 (V) R1 = 8 (2) V2 = 26 (V) 7 Problem 1 Using Kirchhoff's rules in the circuit of image, A- Calculate the current in the circuit. B- Show the direction current in the circuit. C- Calculate the voltage across resistor R1 D- Calculate the power delivered to R2 E- After 15 minutes of working of circuit, how much energy is delivered to resistor Rı? V4 = 28 (V) V3 = 20 (V) R2 = 7()

Answer 1

Ni=8V No =26V I ve=20v H Ri=82 A From Kirchoff's Roop rule : -Vi TIR TV₂ -V3 +1R2- 440 V4=287 I R2=72 » ICR TR2) = V, TV₂ +V4-V₂ > Ix 18+7)=18+20+28-26) I= 30 Current in the circuit. 151=30 » I=30 A I= 2A

B Direction of current in the loop is clockwise as shown in the figure. © voltage across R is up, IR, YR = 2x8V Ve FIGU D Power delivered to R2 is (218x7 W Power delivered to R, is PRi=1?R, PR,= (2) ²x8W 32W 22R > Pes Pre = 28 W Rei

So, energy delivered to R in time #=15 min = 15x60 sec és Eri = Pext Eri = 32x15x60 5 = 288001 2688x10T I عر