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| 1. |
Is there potential difference between 2 terminals of the battery , when no current flows through |
| Answer» In a battery, chemical reactions occur as a result of which electrons are transferred from one\xa0terminal\xa0to another -\xa0in\xa0other words there is a\xa0potential difference between\xa0the poles. ... The negative\xa0terminal\xa0of the cell repels the electrons from the nearby atoms.\xa0All\xa0voltage\xa0sources have two fundamental parts—a\xa0source of electrical energy that has\xa0a\xa0characteristic electromotive force (emf), and an internal resistance r. The emf is the\xa0potential difference\xa0of\xa0a\xa0source when\xa0no current\xa0is\xa0flowing. | |