1. The problem statement, all variables and given/known data A parallel plate capacitor has circular plates of radius 12.0 cm that are separated by a distance of 4.0 mm. The potential across the capacitor is increased at a constant rate of 1300 V/s. Determine the magnitude of the magnetic field between the plates at a distance r = 3.0 cm from the center. 2. Relevant equations id = ε0A(dE/dt) B = [μ0id/(2∏R2)]r 3. The attempt at a solution id = ε0A(dE/dt) dE/dt = 1300 V/s A = ∏R2 R = 0.12 m ε0 = 8.85E-12 id = 5.2E-10 B = [μ0id/(2∏R2)]r r = 0.03 m R = 0.12 m id = 5.2E-10 μ0 = 1.26E-6 B = 2.17E-16 Correct answer is 3.39E-15 How do I get there?