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96. Three bulbs are rated 40 W, 60 Wand 100 W. Which bulb will glow brightly if they are connected in series across a 220 V source? (NTSE Kerala, Stage-I, 2016-17)
40 W
60 W
100 W
All will glow equally bright
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97. What is the equivalent resistance of the following arrangement between M and N? (NTSE Jharkhand, Stage-I, 2016-17)
R/2
R/3
R/4
R/6
98. How many electrons flow per second through the filament of 220 V and 110 W electric bulb? (NTSE Jharkhand, Stage-I, 2016-17)
3.125 x 1018
3.125 x 1022
3.125 x 1020
3.125 x 1015
99. The S.I unit of electrical resistivity is? (NTSE Jharkhand, Stage-I, 2016-17)
ohm
m
ohm m-1
ohm m
100. A bulb of 100 watt, 250 volt has the resistance of (NTSE Jharkhand, Stage-I, 2016-17)
2500 ohm
625 ohm
25 ohm
2.5 ohm
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