The Wheatstone bridge shown in the figure gets balanced when the carbon resistor used as $R_1$ has the colour code (Orange,Red,Brown). The resistors $R_2$ and $R_4$ are $80 \, \Omega$ and $40 \, \Omega$,respectively. Assuming that the colour code for the carbon resistors gives their accurate values,the colour code for the carbon resistor used as $R_3$ would be

  • A
    Brown,Blue,Brown
  • B
    Brown,Blue,Black
  • C
    Red,Green,Brown
  • D
    Grey,Black,Brown

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