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What is the SI unit of power?
Joule
Watt
Newton
Pascal
Watt
The SI unit of power is the Watt, which is defined as the rate of energy transfer or work done per unit time. One watt is equivalent to one joule of energy consumed or produced per second (1extW=1extJ/s).
The SI unit of power is the Watt, which is defined as the rate of energy transfer or work done per unit time. One watt is equivalent to one joule of energy consumed or produced per second (1extW=1extJ/s).
Think of energy as the total water in a tank (Joules) and power as the rate at which the tap lets water flow out (Watts). A high-power tap empties or fills things much faster.
P = W/t: Power is Work over Time.
P=tWтАЛ тАФ Power as work done per unit time
P=Fimesv тАФ Power as force multiplied by velocity
Power measures how quickly work is performed or how fast energy is converted from one form to another. Mathematically, it is the derivative of work with respect to time, meaning a higher power rating indicates a faster rate of energy transformation.
The SI unit of power is the Watt (W).
Named in honor of James Watt, the Scottish inventor of the steam engine.
Dimensionally, power is represented as [ML2TтИТ3].
Rating electrical appliances (e.g., a 60W light bulb uses 60 joules per second)
Measuring mechanical output of vehicle engines
Option A (Joule) is the SI unit of energy or work.
Option C (Newton) is the SI unit of force.
Option D (Pascal) is the SI unit of pressure.
B is correct тАФ The SI unit of power is the Watt, representing a rate of one joule per second.
Do not confuse energy (Joules) with power (Watts). Power always incorporates a time dimension in its denominator (tтИТ1).