Question

TIL
JUU 2
9
A metallic rod of mass per unit length
0.5 kg m is lying horizontally on a smooth
inclined plane which makes an angle of 30° with
the horizontal. The rod is not allowed to slide
down by flowing a current through it when a
magnetic field of induction 0-25 T is acting on it
in the vertical direction. The current flowing in
the rod to keep it stationary is
(1) 7.14 A
(2) 14.76 A
(3) 5.98 A
(4) 11:32 A
plz and.dao na.​

Answer 1

hey u make a rough diagram and find the direction of magnetic force acting on the current carrying rod. Then u just need to make component of the magnetic force and balance it with mgsin(theta)