00:01
Hi, here in this given problem there are two vertical rails, parallel metallic rails, which are joined with the help of a resistance at the top ends.
00:18
That resistance is having a value 1 .1 om and a horizontal rod is free to slide over these rails.
00:32
The gap between the rails which will serve as the length of that rod also, this is given as 14 centimeter or 0 .1 4 meter.
00:48
A magnetic field perpendicular to the plane of page means perpendicular to the screen.
00:58
That magnetic field is having a magnitude of for 5 .0 into 10 dash per minus 2 tesla and mass of the rod that is 60 gram.
01:12
So the rod will be having a tendency to slide down due to its weight.
01:20
So as it will be moving down, emotional emf will be induced across its ends and due to this closed circuit, an emf will be induced in it and so due to the closed circuit a current will be passing through it.
01:35
So due to that current, the rod will experience a magnetic force also in upward direction as per lenses law which says the direction of current should be such that it opposes the reason behind its induction.
01:51
So the magnetic force should be upward and when the rod will be.
01:56
Achieve a terminal velocity...