electromotive force; voltage
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
electromotive force (EMF); the work done per unit charge by a source in moving charge around a complete circuit
technicalA fundamental concept in physics and electrical engineering, measured in volts (V). When no current flows, the EMF equals the potential difference (voltage) between the terminals of the source.
Diàn电
chí池
de的
diàn电
dòng动
shì势
tōng通
cháng常
shì是
1.51
.
fú5
tè伏
特
。
The electromotive force of a battery is typically 1.5 volts.
Cè测
liáng量
diàn电
yuán源
diàn电
dòng动
shì势
xū需
yào要
yī一
gè个
gāo高
nèi内
zǔ阻
de的
diàn电
yā压
biǎo表
。
Measuring the EMF of a power source requires a voltmeter with high internal resistance.
Show 2 more examplesShow fewer examples
Fā发
diàn电
jī机
chǎn产
shēng生
de的
diàn电
dòng动
shì势
yǔ与
cí磁
tōng通
liàng量
de的
biàn变
huà化
lǜ率
chéng成
zhèng正
bǐ比
。
The electromotive force generated by a dynamo is proportional to the rate of change of magnetic flux.
Zài在
kāi开
lù路
zhuàng状
tài态
xià下
，
diàn电
yuán源
liǎng两
duān端
de的
diàn电
yā压
děng等
yú于
qí其
diàn电
dòng动
shì势
。
Under open-circuit conditions, the voltage across the terminals of a power source equals its electromotive force.