CONCEPT:If n batteries with each having an emf ‘V’ and interval resistance ‘R’ are connected in SERIES, the equivalent circuit can be drawn as:Application:Given 2 ROWS of cellsLet each ROW has n cellsGiven V = 2.1 V, and R = 0.5 ΩApplying KVL, we get:nR(3) – nV + 6(0.7) = 0\(\frac{3}{2}n - 2.1\;n + 4.2 = 0\)0.6 n = 4.2n = 7∴ The minimum no. of cells will be:= n(1st row) + n(2nd row) = 14 "> CONCEPT:If n batteries with each having an emf ‘V’ and interval resistance ‘R’ are connected in SERIES, the equivalent circuit can be drawn as:Application:Given 2 ROWS of cellsLet each ROW has n cellsGiven V = 2.1 V, and R = 0.5 ΩApplying KVL, we get:nR(3) – nV + 6(0.7) = 0\(\frac{3}{2}n - 2.1\;n + 4.2 = 0\)0.6 n = 4.2n = 7∴ The minimum no. of cells will be:= n(1st row) + n(2nd row) = 14 ">
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The cells are connected in two rows in parallel to pass a current of 6 A through an external resistance 0.7 Ω. If the electromotive force of each cell is 2.1 volts and internal resistance 0.5 Ω, the minimum number of cells will be

General Knowledge General Awareness in General Knowledge . 7 months ago

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CONCEPT:If n batteries with each having an emf ‘V’ and interval resistance ‘R’ are connected in SERIES, the equivalent circuit can be drawn as:Application:Given 2 ROWS of cellsLet each ROW has n cellsGiven V = 2.1 V, and R = 0.5 ΩApplying KVL, we get:nR(3) – nV + 6(0.7) = 0\(\frac{3}{2}n - 2.1\;n + 4.2 = 0\)0.6 n = 4.2n = 7∴ The minimum no. of cells will be:= n(1st row) + n(2nd row) = 14
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Posted on 26 Nov 2024, this text provides information on General Knowledge related to General Awareness in General Knowledge. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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