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Which one of the following is NOT the correct unit of ‘power’?

June 1, 2025 by rawan239

Which one of the following is NOT the correct unit of ‘power’?

Joule / second

(Newton-metre) / second

Watt

Newton / metre

This question was previously asked in

UPSC Geoscientist – 2021

Download PDF Attempt Online

Newton/metre (N/m) is NOT a correct unit of ‘power’.

Power is defined as the rate of doing work or transferring energy. Its standard unit in the SI system is the Watt (W).

Work is Force x Distance, measured in Joules (J) or Newton-metres (N.m). Power = Work/Time. So, Joule/second (J/s) and (Newton-metre)/second (N.m/s) are equivalent units of power. Watt (W) is defined as 1 Joule per second. Newton/metre (N/m) is a unit typically associated with force per unit length or surface tension.

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