When three identical bulbs of 60W, 200 V rating are connected in series to a 200V supply, the power drawn by them will be:
Text Solution
Verified by ExpertsThe correct answer is:
D
In series order, the resistance of three bulbs must be added to give resultant resistance of the circuit.
Let R 1 , R 2 and R 3 are the resistances of three bulbs respectively.
In series order
R = R 1 + R 2 + R 3
but R = 
and supply voltage in series order is the same as the rated voltage.
∴ 
= 
+ 
+ 
or 
= 
+ 
+ 
or P = 
= 20 W
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
In an electric circuit containing a battery, the positive charge inside the battery
In which of the above cells, the potential difference between the terminals of a cell exceeds its e…
The efficiency of a cell when connected to a resistance R is 60%. What will be its efficiency if th…
Two bulbs 25W, 220V and 100W, 220V are given. Which has higher resistance?
The resistors whose ratio is 1 : 2, are connected in parallel, the ratio of power dissipated is :
Find the current flowing through the resistance R 1 of the circuit shown in figure if the resistanc…