일반물리학 2 — Induction and Inductance: Problem 2

2 Coil 1 has \( L_1 = 35 \text{ mH} \) and \( N_1 = 100 \text{ turns} \). Coil 2 has \( L_2 = 40 \text{ mH} \) and \( N_2 = 200 \text{ turns} \). The coils are fixed in place; their mutual inductance \( M \) is 9.0 mH. A 6.0 mA current in coil 1 is changing at the rate of 4.0 A/s. (a) What magnetic flux \( \Phi_{11} \) links coil 1, and (b) what self-induced emf appears in that coil? (c) What magnetic flux \( \Phi_{21} \) links coil 2, and (d) what mutually induced emf appears in that coil?