Question

please answer this question

Answer 1

equivalent Resistance in parallel connection =
1/R1 +1/R2 + 1/R3 = 1/Req
a):Given R1= 1 Ohms
R2=10^6 Ohms

1/Req = 1/1 + 1/10^6 =1/1 + 1/1000000
= (1000000 + 1)/1000000
1000001/1000000 = 1.000001 Ohms

b): R1 = 1 Ohms
R2 = 10³ Ohms
R3 = 10^6 Ohms
1/Req = 1/1 + 1/1000 + 1/1000000
= (1000000 + 1000 + 1)/1000000
=1001001 /1000000 =1.001001 Ohms