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Zener Diode

Four bulbs ha...

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Four bulbs having powers 25 W, 40 W, 60 W and 100 W ate connected in series and this combination is connected across the mains. Find which bulb has highest potential difference and Lowest potential difference.

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Q. Four bulbs having power rating

25 W, 40 W, 60 W a n d 100 W

are connected in series and this combination is connected across the a voltage

V

then match the following:

Match the following:

Column -I	Column - II
a. 25 W bulb	(i) The highest potential difference
b.100 W bulb	(ii) The second highest potentisl difference
c.60 W bulb	(iii) The third highest potential difference
d.40 W bulb	(iv) The lowest potential difference

Q. Four bulbs of

25 W, 40 W, 60 W

100 W

are connected in series and their combination is connected across a main power supply. Match the following list I with the potential difference across each bulb in List II

List I	List II
(P) $25 W$	(1) Highest potential differences
(Q) $100 W$	(2) Second highest potential difference
(R) $60 W$	(3) Third highest potential difference
(S) $40 W$	(4) Lowest potential difference

40 W

60 W

and rated voltage

240 V

are connected in series across a potential difference of

420 V

. Which bulb will work at above its rated voltage?

Q. Two bulbs of 40 W and 60 W are connected in series to an external potential difference. Which bulb will glow brighter? Why?

Q. Two capacitors A and B of capacitance

6 μ F

10 μ F

respectively are connected in parallel and this combination is connected in series with a third capacitors C of

4 μ F

. A potential difference of 100 volt is applied across the entire combination. Find the charge and potential difference across

6 μ F

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