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Frequency of Oscillations in LC Circuit

A battery of ...

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A battery of six cells each of e.m.f. 2 V and internal resistance 0.5 oh is being charged by D. C. mains of e.m.f.220 V by using an external resistance of 10 ohm What will be the charging current?

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Q. A battery of 20 cells (each having e.m.f. 1.8 volt and internal resistance 0.1 ohm) is charged by 220 volts and the charging current is 15A. The resistance to be put in the circuit is

Q. A battery of four cells in series, each having an emf of 1.4 V and an internal resistance of 2

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Q. Two identical batteries, each of e.m.f.

2

volt and internal resistance

1.0

ohm are available to produce heat in an external resistance

R = 0.5

ohm by passing a current through it. The maximum Joulean power that can be developed across

R

using these batteries is

24

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 :

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