Q6 of 330 Page 47

Why is series arrangement not used for connecting domestic electrical appliances in a circuit?

In series arrangement if one electrical appliance stops working due to some defect, then all other appliance also stop working as the whole circuit is broken.So we should not used series arrangement for connecting domestic electrical appliances in a circuit.


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4

Which type of circuit, series of parallel, is preferred while connecting a large number of bulbs:

(a) for decorating a hotel building from outside?


(b) for lighting inside the rooms of the hotel?

 5

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

 7

Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.

 8

Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.

(a) Which circuit would have the highest voltage across each bulb?


(b) In which circuit would the bulbs be brighter?


(c) In which circuit, if one bulb blows out, all others will stop glowing?


(d) Which circuit would have less current in it?