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International ohm is defined in terms of the resistance of

April 16, 2024 by rawan239

A column of mercury

A cube of carbon

A cube of copper

The unit length of wire

The correct answer is: A. A column of mercury.

The International ohm is defined as the

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resistance, expressed in ohms, of a column of mercury 106.3 cm long and 1 square millimeter in cross section, at the temperature of melting ice.

The other options are incorrect because:

A cube of carbon is not used to define the International ohm.
A cube of copper is not used to define the International ohm.
The unit length of wire is not used to define the International ohm.

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