Induced EMF in Changing Magnetic Field · PhysicsBowl 2018 #35
Physics · electromagnetism
Problem
200 turns of wire are wrapped on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the induced emf.
(A) 2.05 V (B) 4.05 V (C) 0.205 V (D) 0.405 V (E) 0.605 V