A thin semicircular conducting ring 
of radius 
is falling with its plane vertical in a horizontal magnetic field 
, as shown in the figure. The potential difference developed across the ring when its speed is 
A
zero
B
and 
is at higher potential
C
and 
is at higher potential
D
and 
is at higher potential
Text Solution
Verified by ExpertsThe correct answer is:
D
Motional emf induced in the semicircular ring 
is equivalent to the motional emf induced in the imaginary conductor 
.
i. e., 
Therefore, potential difference developed across the ring is 
with 
at higher potential.
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 which of the following devices, the eddy current effect is not used?
A 800 turn coil of effective area is kept perpendicular to a magnetic field . When the plane of t…
A circuit when connected to an AC source of gives a current of . The same circuit when connected …
A cycle wheel of radius is rotated with constant angular velocity of in a region of magnetic fiel…
The magnetic potential energy stored in a certain inductor is 25 , when the current in the inducto…
An inductor , a capacitor and a resistor are connected in series across a source of . The power…