Acoil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. the coil is short-circuited. initially, inside the coil there exists a uniform magnetic field of magnitude bo parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero? figure 1 of 1 x x x x express your answer in terms of some or all of the quantities a, bo, i, n, an ir submit hints my answers give up review part correct assess part d suppose the external magnetic field is decreased at a greater rate so that it takes the field to drop to zero. what would happen to the induced current in the coil? o the current would increase o the current would decrease o the current would be unchanged. the current would change direction submit my answers give u provide feedback