@@achiltu6804 小子,说话不知深浅不稀奇,五十年前我教中学物理的时候, 物理书教科书上就是 w =AV . W= 电功. A= 表示电流. V= 电压. Insert the number of Amps (A) and Volts (V) below and click on Calculate to obtain Watts (W). A x V = W The formula is (A)*(V) = (W). For example, if you have a current of 2 A and a voltage of 5 V, the power is 2A * 5V = 10W. This comes from the equation P = I * V. Where P is the power in Watts, I is the current in Amps and V is the voltage in Volts.
@@achiltu6804 小伙子口气很大啊,那么你应该知道,A是电流强度安培的符号。很多电器上面都印着最大额定电流,比如10A,15A。那么27A这个型号标识和上述电流标识有什么区别?如果你觉得我这是脑袋不好使,那就用你好使的脑袋来解释一下在所有这些电器中的 A不是表示电流,是在表示什么? 不止现在,五十年前我教中学物理的时候,教科书上也是 W = AV。 Power = Current x Voltage Power tools, vacuum cleaners, and wall chargers all have an "amps" rating on them. The amperage (A) of a normally operating industrial circular saw is 15 A. With this amperage rating, it is possible to determine the total power output of the tool, simply by multiplying the amperage by the voltage of the current it is drawing. For example, running a 15 A circular saw off of a 120 V circuit would lead to a power draw of 1800 watts (W).