Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

biology
Asked by shahnshahdhavaniya | 29 Aug, 2021, 10:31: AM
Expert Answer
Given Network of resistors is redrawn in Step-1 as shown in figure so that it is easy to understand
the parallel-series combinations. As we see in Step-1 , top three resistors of equal resistance R are in parallel.
 
Hence equivalent resistance R/3 of three equal resistors is replacing the three resistors in step-2 of figure.
 
From step-2 , we see that if resitance is measured across A and B ,
then we have series combination of R/3 and  R is in parallel to resistance R  as shown in step-3.
 
Hence Effective resistance Reff = [ (R/3) + R ] || R  = (4/3)R || R =   [ (4/3)R × R ] / [ (4/3)R + R ]   = (4/7) R
 
If effective resistance (4/7)R = 1 Ω , then resistance R of  each resistors is given as  R = (7/4) Ω
Answered by Thiyagarajan K | 30 Aug, 2021, 06:45: PM
CBSE 12-science - Physics
Asked by marasan082 | 29 May, 2022, 10:19: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by shahnshahdhavaniya | 29 Aug, 2021, 10:31: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by babberkavita | 07 Jan, 2021, 02:12: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by arushidabhade | 09 Jul, 2020, 09:28: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
49
Asked by royamisha521 | 26 May, 2020, 10:44: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by abhitailor158 | 01 Feb, 2019, 09:50: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 21 Apr, 2014, 04:42: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×