Question

define power write it's SI unit and dimension so that power is scaler
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Answer 1

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In the International System of Units, the unit of power is the watt, equal to one joule per second. ... Power is a scalar quantity. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft.

SI unit: watt (W)

In SI base units: kg⋅m2⋅s−3

Derivations from other quantities: P = E/t; P = F·v; P = V·I; P = τ·ω

Answer 2

Explanation:

In the International System of Units, the unit of power is the watt, equal to one joule per second. ... Power is a scalar quantity. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft.