Question

please answer this question

Answer 1

Ans. (B) i)
No. of resistors=2
Effective resistance= 80ohms
resistance= ???
ATQ,
r(eff)=nR
80=2*R
R=40 ohms
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ii)
No. of resistors =2
E. resistance=20ohms
Resistance=???
ATQ,
r(eff)=R/n
20=R/2
R=20*2
R=40 ohms
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