The resistance of $0.01 \ N$ $NaCl$ solution at $25 \ ^oC$ is $200 \ \Omega$. The cell constant of the conductivity cell is $1 \ cm^{-1}$. The equivalent conductance is:
- A$5 \times 10^2 \ \Omega^{-1} cm^2 eq^{-1}$
- B$6 \times 10^3 \ \Omega^{-1} cm^2 eq^{-1}$
- C$7 \times 10^4 \ \Omega^{-1} cm^2 eq^{-1}$
- D$8 \times 10^5 \ \Omega^{-1} cm^2 eq^{-1}$
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