International ohm is defined in terms of the resistance of _.
Correct answer: A. A column of mercury
- A. A column of mercury
- B. A cube of carbon
- C. A cube of copper
- D. The unit length of wire
Explanation
It is a fact that column of mercury is used to define ohm in terms of resistance.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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