The resistance offered to the passage of an in-varying current by a column of me

Question

The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

Options:

A . Standard ohm

B . One international ohm

C . One ohm according to SI units

D . One ohm according to working standards

Answer: Option B

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