A) 2R
B) (3/4)R
C) (4/3)R
D) (3/5)R
Correct Answer: D
Solution :
[d] \[{{R}_{eq}}=\frac{\left( R+\frac{R}{2} \right)\times R}{\left( R+\frac{R}{2}+R \right)}=\frac{3}{5}R\]
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