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Elec tric Po tential And Po tential Differ ence

ѧҹѡѡҧ俿

ѧҹѡ俿 ѡɳǡѺѧҹѡͧ ͧҡç֧ٴͧš ͧҹԴҡ͹Ш ʹ俿

͹Ш +q ǹҧѺȢͧʹ俿Ҩҡ B ѧ A зѧҹѡҧ俿ҷ A ٧ҷ B

ѡ俿 ¡ѡ俿 дѺͧѧҹѡ俿 ش ʹ俿 ҡٻ ѡ俿ҷ A ٧ѡ俿ҷ B Ҿѧҹѡ俿ҷ A ٧ҷ B ѡ俿 2 Դ ѡ俿Һǡ ѡͧشʹͧШغǡ ѡ俿ź ѡͧشʹͧШź ѡ俿ҨդҡشШص鹡Դʹ դҹŧ ҧ͡ зٹ ͹ѹ (infinity) 㹡Ѵѡ俿 ش Ѵҡӹǹѧҹѡ俿 Դҡ͹Шطͺ +1 ˹ ѧش ѧ ֧ͧѡ俿
ѡ俿 ش ʹ俿 ѧҹͧ㹡͹Ш ͺ +1 ˹»Шبҡ infinity ѧش ͨҡشѧ infinity ѡ俿˹ŵ


ҧѡ俿ҧش 2 ش

ҧѡ俿ҧش 2 ش ¶֧ "ҹ˹˹»Ш 㹡͹Шҧشͧ"


VB - VA = WAB / Q

Q 繻Шغǡ о

W + ѡ B ٧ҷ A (ҹ)
W - ѡ B ӡҷ A (§ҹ)
W ٹ ѡ B ҡѺѡ A (էҹ)

V = W / Q

W = QV

W = ѧҹ 㹡͹Ш Q ˹ Joule
Q = Ш俿 ˹ Coulomb
V = ҧѡҧ 2 ش ˹ (J/C Volt)