Current Electricity and Electrical InstrumentEasy
Question
A 100 W bulb B1, and two 60 W bulbs B2 and B3, are connected to a 250 V source, as shown in the figure. Now W1, W2 and W3 are output powers of the bulb B1, B2 and B3 respectively. Then,
Options
A.W1 > W2 = W3
B.W1 > W2 > W3
C.W1 < W2 = W3
D.W1 < W2 < W3
Solution
so, 
∴
and R2 = R3 = 
Now,
and 
W1 : W2 : W3 = 15 : 25 : 64
or W1 < W2 < W3
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