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The power of a device is said to be $1$ ____ if it does $1 J$ of work in $1 s$ .

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Detailed Solution

The power of a device is said to be

1

Watt if it does

1 J

of work in

1 s

.
The ability to work is referred to as energy. Energy is always either kinetic or potential. When there is no opposition, force is an interaction that alters an object's motion. The definition of power is the speed at which work is accomplished, or energy is transferred. The watt, denoted by the letter

W

, is the SI unit of power.
Power is defined as the speed at which work is completed.

P = \frac{W}{t}

where

P =

Power

W =

work done

t =

time in seconds
SI unit of power is Watt (W)
So,

1 W = \frac{1 J}{1 s}

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