Question

Define power and explain how to determine power. (4 points)

Answer 1

➤The power is ɑ meɑsure of the rɑte ɑt which work is done (or similɑrly, ɑt which energy is trɑnsferred). The stɑndɑrd unit of power is Wɑtt (1W). The power is determined by the chɑnge in energy, deltɑ E (number of joules) ɑnd deltɑ t, which is the time tɑken in seconds then: P= deltɑ E/ deltɑ t.

❤..ℏ✺℘ḙ !т ℏḙℓ℘ṧ ʏ✺ṳ.. ❤

Answer 2

Explanation:

• The rate of doing work is called power of an object.
• It is also defined as the work done by an object per unit time. Mathematically, its formula is given by :
• $P=\dfrac{W}{t}$, W is work done and t is time taken.
• The SI unit of power is watts and its commercial unit is kWh.
• 1 watt = J/s or N-m/s

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