Write an acrostic of the word power below. P – O – W – E – R –
The Correct Answer and Explanation is:
P – Power is the rate at which energy is transferred or converted.
O – Often, power is associated with mechanical work or electricity.
W – Work done over time is a key factor in calculating power.
E – Energy is the essential element that gets transferred when power is applied.
R – Resistance in electrical systems impacts the power output.
Explanation:
In physics, power refers to how much energy is transferred or converted per unit of time. Mathematically, power is expressed as the ratio of work (energy) done to the time it takes to do it:P=WtP = \frac{W}{t}P=tW
where P is power, W is work or energy transferred, and t is time. This concept is vital in many areas of physics, especially in mechanical systems (e.g., engines) and electrical systems (e.g., circuits).
The letter O highlights that power is frequently discussed in the context of mechanical work or electricity. When engines do work, or electrical circuits supply energy, they are operating at a certain power level.
For W, work is a central part of the power equation. Whether you’re lifting an object or turning a motor, the power depends on how much work is done in a given time frame.
E stands for energy, which is what power uses or transfers. In any system, energy flows from one place to another, and how fast this happens determines the power output.
Lastly, R refers to resistance in electrical systems. Resistance limits the flow of current, and thus, impacts the amount of power that can be delivered in a circuit. The relationship between voltage, current, and resistance is described by Ohm’s law, and it’s key in understanding power consumption in electrical devices.
Thus, this acrostic shows how fundamental power is in our daily life, from mechanical engines to electricity usage.
