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Combination of Resistors

a Draw a circ...

Question

(a) Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
(b) How can you change the brightness of the lamps?

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Solution

a) Circuit diagram:

(b) The brightness of the lamps can be changed by connecting them in parallel.

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The diagram in Fig. 9.28 shows three lamps and three switches 1, 2 and 3 connected with two cells.

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Fig ; 9.28

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