The emf of a cell always greater than its terminal voltage. Why? Give reason.
The emf of a cell always greater than its terminal voltage. Why? Give reason.
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2 Answers
(i) In an open circuit, the emf of a cell and terminal voltage are same.
(ii) In closed circuit, a current is drawn from the source, so, V = E –Ir, it is true/valid, because each cell has some finite resistance.
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Answered
(i) In an open circuit, the emf of a cell and terminal voltage are same.
(ii) In closed circuit, a current is drawn from the source, so, V = E – Ir, it is true/valid, because each cell has some finite resistance.
5 views
Answered