【电势差】

亦称“电位差”，在直流电路中又称“电压”。静电场或直流电路中两点间的电势之差。单位是伏特。数值上等于电场力使单位正电荷从一点移动到另一点时所做的功。

电势差diàn shì chā

电场或电路中两点之间电势的差值。1934年《自然科学辞典》“弗”条：“弗为电势差之单位。一库之电，在电势较高之甲处，与在电势较低之乙处，两者所有之能相差为一千万厄时，甲乙两处之电势差为一弗。”

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• thermo-therapy
• '-therms
• therms
• the roadway
• the roman alphabet
• the rule book
• the rule of law
• the rules of the game
• the running of sth
• the runs
• the rush
• the sabbath
• the sale of sth
• the same
• the same age
• thesaural
• thesauri
• thesaurus
• thesauruses
• the school year/the academic year
• these
• the seabed
• the sea front
• the seafront
• the seashore