Physics, asked by visumore2000, 4 months ago

how potentiometer is used to compare to emf's of two cells by combination method

Answers

Answered by sehajpreet16102005

Answer:

A battery of stable emf E is used to set up a potential gradient V/L along a potentiometer wire (V≡ p.d. across total length L of the wire). The positive terminals of the cells, whose emf's E1 and E2 are to be compared, are connected to the high potential terminal A

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