Question

A semicircular wire of radius r is rotated with constant angular velocity

Answer 1

what to find in this question mate....

Answer 2

Completing the missing information in question :-

A semicircular wire of radius r is rotated with constant angular velocity about the axis passing through one end and perpendicular to the plane of wire. Uniform magnetic strength is B. The induced emf between ends is?

Answer :-

Induced Motion emf at the semicircle end points will be = 1/2 B w l²

Here = l = 2r

Induced Motion emf at the semicircle end points will be = 1/2 B w (2r)²

Induced Motion emf at the semicircle end points will be = 2 B w R²