ashaleecrooks2067 ashaleecrooks2067 12-04-2024 Physics contestada What is the variation of the magnetic flux?(a) -21 × 10⁻² R B (b) -8. 5 × 10⁻⁵ R (c) -1. 5 × 10⁻³ B (d) -8. 5 × 10⁻⁵ B