A wire loop enclosing a semicircle of radius R is located on the boundary of a uniform…
Physics · JEE Advanced · NTA Exams — Electromagnetic Induction and Alternating Currents
A wire loop enclosing a semicircle of radius R is located on the boundary of a uniform magnetic field B. At the moment t = 0, the loop is set into rotation with constant angular acceleration α about an axis O conducting with the line of vector on the boundary. The clockwise e.m.f. direction is taken to be positive.
The variation of e.m.f. as a function of time is
Answer
(A)
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