Current Electricity and Electrical InstrumentHard
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
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
N sources of current with different emf′s are connected as shown in figure. The emf′s of the sources are pro...The equivalent resistance of a group of resistances is R. If another resistance is connected in parallel to the group, i...Which of the statment is wrong : -...The network shown in figure is a part of a complete circuit. If at a certain instant the current ′i′ is 5 A ...The resultant resistance of n resistance wires each of r ohm is R, when they are connected in parallel. When these n res...