1. The problem statement, all variables and given/known data A square loop consists of a single turn with a resistance of 4.00 Ω. The loop has an area of 600 cm^2, and has a uniform magnetic field passing through it that is directed out of the page. The loop contains a 12-volt battery, connected as shown in the figure below. C:\Users\Michael\Pictures\20-p-044.gif At the instant shown in the figure, there is no net current in the loop. At what rate is the magnitude of the magnetic field changing? 2. Relevant equations Φ=BAcosθ ε=-NΔΦ/Δt 3. The attempt at a solution ε=-NΔΦ/Δt ε=-NΔBAcosθ/Δt, A is constant so ε=-NAΔB/Δt ΔB/Δt=ε/NA, negative sign is removed because only magnitude is asked for. ΔB/Δt=12V/(1)(0.06m^2)=200T/s I worked this out and it turned out to be wrong. I put in 12V as the emf as I thought that the total voltage should be the same as there is no net current in the loop, however that is the only part of the problem that I am uncertain about. The answer must be in T/s. Thank you in advance for the help.