Consider a changing magnetic field (from b ′ to b) within a circle of radius 7 m. the magnetic field points out of the page ⊙ and its magnitude is increasing. 7 m b ′ b ′ b ′ 7 m b b b ⇒ the field is defined by b = b t, where b = 0.7 t/s: ~t b~ 0 b ′ b find the direction of the induced emf eind.