A coil of wire having finite inductance and resistance has a conducting ring placed coaxially within it. The coil is connected to a battery at time 
, so that a time-dependent current 
starts flowing through the coil. If 
is the current induced in the ring. and 
is the magnetic field at the axis of the coil due to 
, then as a function of time ( 
), the product 
Text Solution
Verified by ExpertsThe correct answer is:
D
Using 
etc, as different constants.
This quantity is zero for 
and 
and positive for other value of 
. It must, therefore, pass through a maximum.
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…