Question

for number 1, are the resistors still considered to be in a series although a wire runs between them?

If a meter were connected between terminals a and b, what reading would be obtained (resistance Rab ). 32 272 4r 53 262 24r 81 Z 165 2. The variable resistor "R" must be adjusted so that 6V appears across the 4 k2 load resistance. What should be the value of R? 2000 18 & 4000 R

Answer 1

is network o the given network is The sor Here both in series » and its are m n o we com add them 8+16=zyn سالم ssa . Чл 24M : 24 zyn are and in parallel > Here zur for that = zuxzy = 120 24+24

and in senes sn wie 7r. and in sinies. also un are 31 and a = .3+4= 7. 7+5=121 -Mu The : nehoork. ls . new - in are parallel Here . 6 and lon SD Tzu = 40 . 9

7., 12r Now, and ur are in sering a man who .23 Rob = 234 ② The given data is 2000k V=6V + + + Sou Eu 40oon it cov) is 4ka ev. and across The voltage R and ukr across 40oor and R them. are in parallel, so has same voltage Vurn = Ve = 6v.

200012 of Irocar Iyooor + IRL 1 t.. 340001 - - 1 the lov) . By KCL using nodal at node ® Analyens , Apply and solve for Iroon + IR + Tyroon =0 n Enter Leaving into from node node ve the curent! current - – Izovor + Ie + Iyooon = 0 - [62] + Lengt Lov om = 0 - ok + E + GR = 0 2k

- GMA + 6 + 2 k = 0 - GMA + 6 + IS MA=0 = CMA - 1. SMA = 4.5mA a = 45 mA R = = = 6 x103 ~ . hisxis 4.5 i 4 sm Rs. 1.33 Xion = 1333.33 1 the variable resistor (R)=1333.33