is a vertical smooth long loop having a total resistance 
where 
is parallel to 
and separation between them is 
. A constant magnetic field 
perpendicular to the plane of the loop exists in the entire space. A rod 
of length 
and mass 
is made to slide down from rest under the gravity as shown in figure. The terminal speed acquired by the rod is 
acceleration due to gravity 
Text Solution
Verified by ExpertsC
As rod CD slides down with velocity 
, it cuts magnetic field lines.
Induced EMF: 
Induced current in the circuit: 
Magnetic force on the rod (upward, by Lenz's law):
At terminal velocity, acceleration is zero.
Applying Newton's second law:
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