A line of charge L=10^-6C/m is fixed on the rim of a wheel of radius R=1m,which is then suspended horizontally,so that it is free to rotate(the spokes are made of wood).In the central region up to radius a=1/2m,there is uniform magnetic field B=1T pointing up.Now suddenly the field is turned off.If the moment of inertia 'I'=0.25kg/m^2,the final angular velocity 'w' of the wheel is n*pi*10^-6 rad/sec.Find n.
Siri was using dat torque concept jo aapne uss din karaya aisa hi aek circular loop ke liye........But isme mera answer t ke terms mein aa rha hai....And wat will happen when d magnetic field is "switched off"?
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