An electric bulb rated as 200W at 100V is used in a circuit having 200V supply. The resistance 'R' that must be put in series with the bulb so that the bulb delivers the same power is 
.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(50)
Power 
To produce same power, same voltage (i.e. 100V) should be across the bulb Hence, R = R B
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
A cylindrical wire of radius 0.5 mm and conductivity S/m is subjected to an electric field of 10m …
In the figure given, the electric current flowing through the resistor is .
The value of to the…
The energy dissipated by a resistor is in when an electric current of flows through it. The resi…
The equivalent resistance of series combination of two resistors is . When they are connected in p…
Seawater at a frequency , haspermittivity and resistivity . Imagine a parallel plate capacitor i…
The voltage across the resistor in the given circuit is volt.
The value of to the nearest integ…