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Symmetry in Circuits

53.: 36 cells...

Question

53.: 36 cells each of internal resistance 0.5 ohm and e.m.f 1.5 V,each are used to send current through an external 2 ohm resistance. Find the value of maximum possible current and the number of rows and cells in row to obtain this value

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Q. Twenty four cells each of emf 1.5V and internal resistance 0.5 ohms are to be connected to a 3 ohm resistance. For maximum current through this resistance the number of rows and number of columns that you connect these cells is?

Q. In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of

20 Ω

. If the emf and internal resistance of each cell is 1.5 volt and

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cells, each having the same e.m.f. and

2

ohm internal resistance, are used to draw maximum current through an external resistance of

3

ohm. The cells should be connected :

Q. To get maximum current through a resistance of

2.5 Ω

m

rows of cells, each row having

n

cells. The internal resistance of each cell is

0.5 Ω

. What are the values of

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m

if the total number of cells is

45

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Q. You are given 48 cells each of emf 2 V and internal resistance 1 ohm. How will you connect them so that the current through an external resistance of 3 ohm is the maximum?

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