Questions
A conducting rod of length l is moving on a horizontal smooth surface. Magnetic field in the region is vertically downward and of magnitude Bo. If centre of mass (COM) of the rod is translating with velocity Vo and rod rotates about COM with angular velocity vo/l, hen potential difference between points O and A will be
detailed solution
Correct option is A
v=v0+ωx=v0+v0lx due to mutual induction∫de=∫Bvdxe=∫0l/2Bv0+v0xldx=58B0v0lSimilar Questions
An elasticized conducting band r is around a spherical balloon T (figure). Its plane passes through the center of the balloon. A uniform magnetic field of magnitude 0.04 T is directed perpendicular to the plane of the band. Air is let out of the balloon at 100 cm3s-1 at an instant when the radius of the balloon is 10 cm. The induced emf in the band is
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