Concentric Rings.PNG 2b Two concentric circular loops of radii b and 2b, made of the same type of wire, lie in the plane of the page, as shown above. A uniform magnetic field is confined to a region of radius a, where a < b, and the field is changing at a constant rate. The induced emf in the wire loop of radius b is ɛ. What is the induced emf in the wire loop of radius 2b? A 3. B) ɛ/2 © E/4 D 2ɛ 4ɛ

Concentric Rings.PNG 2b Two concentric circular loops of radii b and 2b, made of the same type of wire, lie in the plane of the page, as shown above. A uniform magnetic field is confined to a region of radius a, where a < b, and the field is changing at a constant rate. The induced emf in the wire loop of radius b is ɛ. What is the induced emf in the wire loop of radius 2b? A 3. B) ɛ/2 © E/4 D 2ɛ 4ɛ