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Three identical resistors $R_1=R_2=R_3$ are connected as shown to a battery of constant e.m.f. The power dissipated is ...........
  • AThe least in $R_1$
  • BGreatest in $R_1$
  • CIn the ratio $1:2$ in resistance $R_1$ and $R_2$ respectively
  • DThe same in $R_1$ and in the parallel combination of $R_2$ and $R_3$
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