3. electricity is important to us(结尾) 相关知识点: 试题来源: 解析 【解析】Electricity is a major kind of power we use a lot in our daily life. At home, we u se it for the lights, T Vs, air conditioning an d so on. Also, in factories, electricity makes t he large machines ...
Wind power can be used to generate electricity. What is “generate electricity” in Chinese? A. 消耗电能 B. 产生电能 C. 储存电能 D. 浪费电能 相关知识点: 试题来源: 解析 B。“generate electricity”是“产生电能”的意思。A 选项“消耗电能”是“consume electricity”;C 选项“储存电能”是“...
Electricity is a natural phenomenon that occurs throughout nature and takes many different forms. In this tutorial we'll focus on current electricity: the stuff that powers our electronic gadgets. Our goal is to understand how electricity flows from a power source through wires, lighting up LEDs...
Study what is standby power and try to reduce the energy consumption.Saving electricity,save money,save the environment.
However, it’s difficult to create high-voltage DC current, so electricity is transmitted as AC current and then stepped down to a lower voltage by transformers before being supplied to electric devices via the power grid. Then those devices, in most cases, convert the AC current into DC ...
Wind power is energy, such as electricity, that is generated directly from the wind. It is considered a renewable energy source because there is always wind on the Earth and we aren't 1 the wind when we make energy from it. Wind power also does not cause pollution. ...
It gives us power andflows through wires. We use electricity in hundreds ofways every day. We use it to watch TV,play computergames,see a film and read books at night. Fridges,washing machines and rice cookers can't work withoutelectricity. Electricity is so useful, but where does itcome...
We will discuss electricity in the simplest terms and show how it is measured. We will then compare it to that other common commodity used in most households—water. For those who think electricity flows out of a switch on the wall in the way water flows out of the tap on the sink, ...
Power is one of the key concepts and units associated with electrical science, measured in watts, power is an important parameter.
If you’re like most people, you have trouble envisioning what voltage is since you can’t view it directly with your eyes. To understand voltage, you must first understand electricity. Electricity flows as a current. You can imagine it as a flow of water, like in a river. The water ...