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Combination of Resistors

Draw a circui...

Question

Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.

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Solution

Two 2 V cells connected in series will supply 4 V. The two bulbs should be connected in parallel with this battery.

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(a) Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
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A

on your diagram to show where an ammeter should be placed to measure the current.

Q. Describe the construction and working of a potentiometer. Explain, drawing circuit diagram, how emfs of two cells can be compared with its help?

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