A galvanometer having full scale deflection current of $10\mathrm{ }\mathrm{m}\mathrm{A}$ and resistance $8\mathrm{ }\mathrm{\Omega }$ is joined in circuit as shown. When the terminals $A$ and $B$ are used and $C$ remains open, the range of the ammeter is $I.$ When the terminals $A$ and $C$ are used and $B$ remains open, then the range of the ammeter is

• A

  $I$
• Correct answer
  B

  $\frac{I}{2}$
• C

  $\frac{I}{3}$
• D

  $\frac{2I}{3}$

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