Question

A semicircular loop of radius R is rotated with an angular velocity w perpendicular to the plane of a magnetic
field B as shown in the figure. Emf induced in the loop is​

Answer 1

The value of induced emf in the loop is equal to 2Blw².

In the question we will find the induced emf in the loop using the formula ,1/2 Bl²w

B - magnetic field perpendicular to the plane of the semicircular loop

w - angular velocity of the semicircular loop

l = 2R ( for a semicircular loop)

The value of the induced emf = 1/2 B(2R)²w

= 2BR²w

Answer 2

Answer:

1/2×B×omega×R^2 is the answer