A metallic rod of mass per unit length 0.5 kg m-1 is lying horizontally on a smooth inclined plane which makes an angle of 300 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

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

7.14 A

5.98 A

14.76 A

11.32 A

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Mass per unit length of a metallic rodml=0.5 kg m-1Let I be the current flowing. For equilibrium,mgsin30°=IlBcos30°I=mglBtan30°=0.5×9.80.25×3=11.32 A

Watch 3-min video & get full concept clarity