Two inductor coils of self inductance 3H and 6H respectively are connected with a resistance 10 Ω Ω and a battery 10 V as shown in figure. The ratio of total energy stored at steady state in the inductors to that of heat developed in resistance in 10 seconds at the steady state is (neglect mutual inductance between L 1 and L 2 ):
A
B
C
D
1
Text Solution
Verified by ExpertsThe correct answer is:
B
Leff = 2H
Energy stored in inductor = 
LI 2
= 
× × 2 = 1J.
Energy developed in resistance = I 2 RT = 1 2 × 10 × 10 = 100 J
Hence the required ratio is 
.
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
An electric motor operating on a 60 Vdc supply draws a current of 10 A. If the efficiency of the mo…
A thin semicircular conducting ring of the radius is falling with its plane vertical in a horizont…
At a place the value of horizontal component of the earth's magnetic field is Weber . A metallic…
A circular loop of radius carrying current I lies in plane with its centre at origin. The total m…
Two identical circular loops of metal wire are lying on a table without touching each other. Loop-A…
A small square loop of wire of side l is placed inside a large square loop of wire of side . The l…