The diode used in the circuit has a barrier voltage of $0.5\,V$ and a maximum power rating of $10\,mW$. What should be the minimum value of resistance $R$ connected in series with the diode?

  • A
    $400\,\Omega$
  • B
    $200\,\Omega$
  • C
    $100\,\Omega$
  • D
    $50\,\Omega$

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