Which of the following is not a unit of power?
a)hp
b)J
c)W
d)J/s
I answered d. J/s because its measuring speed and not power. I don't know if its correct or not.
Thanks!
nope. it's not D,,
power is work per unit time, or
P = w/t
where w = work in Joules (J) and t = time in seconds (s)
thus the unit of power is Joules/second or J/s
(A) hp = horsepower --> a unit of power,,
(B) J = Joules --> unit of work
(C) W = watts --> a unit of power, and it is also 1 watt = 1 joule/second
(D) J/s --> of course, a unit of power
so it's (B).
hope this helps. :)
Your answer is correct. J/s (joules per second) is not a unit of power. It is a unit of measurement for the rate of energy transfer, commonly known as power. The correct units of power in the given options are:
a) hp (horsepower) - unit of power
b) J (joule) - unit of energy
c) W (watt) - unit of power
So, the answer is d) J/s.
To determine which of the options is not a unit of power, you need to understand what each unit represents.
a) "hp" stands for horsepower, which is a unit of power commonly used in the automotive and engineering industries.
b) "J" stands for joule, which is a unit of energy. While energy and power are related, joule is not a unit exclusively used to measure power.
c) "W" stands for watt, which is the standard unit of power in the International System of Units (SI). It represents the rate of energy transfer or conversion per unit of time.
d) "J/s" stands for joules per second, which is also a valid unit of power. It represents the rate at which energy is transferred or converted.
From the options provided, "J" (joule) is not a unit of power, as it measures energy rather than power. Therefore, the correct answer is b) J.