An automobile with a radio antenna 1.0 m long generates an emf, V1, since it is traveling at 100.0 km/h in a location where the Earth's horizontal magnetic field is 5.5×10−5 T. At some time, the radio antenna quadruples in length and the car begins traveling at a quarter of the original speed. What is the ratio of the new emf generated, V2, to the original emf, V1 ? 0.5 V1 0.75 V1 0.125 V1 1 V1
