When the capacitor is fully charged then find the current drawn from the cell.

• A

  $9 \mathrm{~mA}$
• B

  $2 \mathrm{~mA}$
• C

  $1 \mathrm{~mA}$
• Correct answer
  D

  $3 \mathrm{~mA}$

Solution

When capacitor is fully charged, it offers infinite resistance so circuit becomes
Current drawn from the cell, $I=\frac{9 \mathrm{~V}}{(1+2) \mathrm{k} \Omega}=3 \mathrm{~mA}$

Hence, the correct answer is option: 'D'.