18 A non conducting non magnetic rod having circular cross

Last updated: 6/12/2023

18 A non conducting non magnetic rod having circular cross section of radius R is suspended from a rigid support as shown in the figure A light and small coil of 300 turns is wrapped tightly at the left end of the rod where uniform magnetic field B exists in vertically downward direction Air of density p hits the half of the right part of the rod with velocity v as shown in the figure What should be current in clockwise direction as seen from O in the coil so that rod remains horizontal Give answer in mA given 2 TRB 1 A 2 Lv V P B air V