Current Electricity and Electrical InstrumentHard
Question
Five identical resistors each of resistance 1Ω are initially arranged as shown in the figure by clear lines. If two similar resistances are added as shown by the dashed lines then change in resistance in final and initial arrangement is
Options
A.2
B.1Ω
C.3Ω
D.4Ω
Solution
initial Req = 5Ω
final Req = 3Ω
change in resistance = 5 − 3 = 2Ω
final Req = 3Ω
change in resistance = 5 − 3 = 2Ω
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