A uniform magnetic field B exists in a cylindrical region, shown dotted in figure. The magnetic field increases at a constant rate
. Consider a circle of radius r coaxial with the cylindrical region. (a) Find the magnitude of the electric field E at a point on the circumference of the circle. (b) Consider a point P on the side of the square circumscribing the circle. Show that the component of the induced electric field at P along ba is the same as the magnitude found in part (a)
![](https://search-static.byjusweb.com/question-images/img/study_content/content_ck_images/images/Pg20311_EX_Q64.png)