Electromotive force (EMF) is measured in volts .
举一反三
- 导体切割磁场线，没有构成闭合回路的话，那么___The conductor cuts the magnetic field line without forming a closed loop, then___ A: 没有感应电流，没有电动势；no induced current, no electromotive force; B: 没有感应电流，有电动势；there is no induced current and there is an electromotive force; C: 有感应电流，没有电动势；there is an induced current and no electromotive force; D: 有感应电流，有电动势；there is an induced current and an electromotive force;
- 智慧职教: 交流发电机的（）是产生交流电动势的？ What produces the alternating current electromotive force?
- 有两个相同的电极，其电解质溶液相同但浓度不同，都可以进行电极反应。若用这两个电极来组成原电池，其电动势为以下哪一项: A: EMFθ=0，EMF≠1。 B: EMFθ=0，EMF=0； C: EMFθ≠0，EMF=0； D: EMFθ≠0，EMF≠1；
- If the program is stored entirely in an external EPROM, what voltage must be applied to the /EA PIN on the 8051? （ ） A: 0 volts B: +10 volts--------------------------------------------------------------------------------------------------------------------------------- C: +5 volts D: -10 volts
- The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.( ) A: alternating current 200 volts voltage B: direct current 24 volts voltage C: direct current 200 volts voltage D: alternating current 24 volts voltage