MHT CET20243 May 2024Evening ShiftPhysicsElectromagnetic InductionActual
A rod of length ' l ' is rotated with angular velocity ' ' about its one end, perpendicular to a magnetic field of induction 'B'. The e.m.f. induced in the rod is
Options
- AB l^2
- B0.5 ~B l^2
- CB /
- D0.5 ~B /
Correct answer
B. 0.5 ~B l^2
Step-by-step solution
A conducting rod of length ' l ' whose one end is fixed, is rotated about the axis passing through its fixed end and perpendicular to its length with constant angular velocity . E.M.F induced, e = B l^2 n = B l^2 ~T e = 1 2 ~B l^2 =0.5 ~B l^2 ( = 2 ~T )