Watt, in electrical terms, is the power developed when one volt of potential difference drives a current of one ampere. The device draws 2 amperes at 230 volts, resulting in 460 watts. 5 Joule The International System unit of electrical, mechanical, and thermal energy, equal to the work don...
I have shot a picture with a Meta Quest Pro (as a stand-in to judge size and perspective to compare against Apple’s picture of the battery pack. In the picture is a known 37Wh battery pack. This battery pack is in a plastic case with two USB-A and one USB-micro, not in...
How do we compare differences in seasonal energy efficiency or operating costs of different brands or models of air conditioners? What is a BTU or British Thermal Unit? How do we convert Watts to Joules? Here is an Air Conditioning & Heating System Dictionary giving definitions of BTU, Joule,...
It is a well-known fact that if the water is to flow out of a pipe, the water needs to have a force or “pressure” pushing it, either from gravity or a mechanical pump. Electrical Circuit Diagram Compared to a Water Pump In our analogy: Voltage is the pressure that forces the ...
What is the difference between Electric Potential and Potential Energy? Which of the following units is acceptable for electric flux? (a) N/C (b) Nm^2/C (c) N/Cm^2 (d) C/Nm^2. How many watts is one kilowatt equal to? What is the equivalent of 1 kWh in Joule?
Voltage Definition: Voltage is defined as the potential energy difference per unit charge between two points in an electrical field. Understanding Through Analogy: Voltage can be likened to water pressure in a hydraulic system, where higher pressure pushes water through pipes, similar to voltage pushi...
(a) the amount of work that can be done in a given time and (b) how fast a given amount of work can be done? Power: Power is a scalar quantity that denotes the rate at which energy can be supplied to a gi...
The ratio of the speed of light in a vacuum to that in a medium is the 'index of refraction, n.' Just a few months ago, a team at the Ecole Politechnique Lausanne alleged that they had produced the first photograph of light particles and waves! I am not sure that I understood ...
watts to overcome. Niels ran consistently at 270 watts, a wattage that he knew he could sustain for a half marathon. His pace was 8:05 min/mile in the strong headwind and (with the same power!) as compared to the pace he ran with a tailwind, that being 7:00 min/mile. His run ...
Compared to constantan and manganin, these alloys possess a slightly greater coefficient of thermal resistance. One illustration of this group of alloys is nichrome. Precision resistances cannot be made with these alloys. Nichrome resists corrosion also at extremely high temperatures as well as possessi...