You then used your values of L10c and L1sc to calculate the coupling factor between the primary and 4106-415C secondary coils using the following expression: k = L00 Derive the expression k = using your knowledge of circults and mutually coupled colls. Show LLOC that you had to make. Hint: It may be useful to work with all your working and any assumptions impedances rather than inductances. L_loc b M L1 12 L_1sc b L1 M 2