chap23solns1

# chap23solns1 - Faradays Law and Inductance CHAPTER OUTLINE...

This preview shows pages 1–3. Sign up to view the full content.

Faraday’s Law and Inductance CHAPTER OUTLINE 23.1 Faraday’s Law of Induction 23.2 Motional emf 23.3 Lenz’s Law 23.4 Induced emfs and Electric Fields 23.5 Self-Inductance 23.6 RL Circuits 23.7 Energy Stored in a Magnetic Field 23.8 Context Connection The Repulsive Model for Magnetic Levitation SOLUTIONS TO RELEVANT PROBLEMS FOR FINAL EXAM Section 23.1 Faraday’s Law of Induction Section 23.3 Lenz’s Law P23.1  B t B A  t 2.50 T 0.500 T 8.00 10 4 m 2 1.00 s 1 N s 1 T C m 1 V C 1 N m 1.60 mV and I loop R 1.60 mV 2.00 0.800 mA P23.2  N BA cos t NB r 2 cos f cos i t 25.0 50.0 10 6 T 0.500 m 2 cos180  cos 0 0.200 s  9.82 mV

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
P23.4 dBA  dt 0.500 0 nA dI dt 0.500 0 n r 2 2 I t (a) I ring R 0 n r 2 2 2 R I t (b) B 0 I 2 r 1 0 2 n r 2 2 4 r 1 R I t (c) The coil’s field points downward, and is increasing, so . B ring points upward I FIG. P23.4 P23.5 [ Nota bene: You do NOT need to be able to compute magnetic flux via integration, but just recognize that Φ B = BAcos θ is equivalent to Φ B = BdA , etc. ] (a) d B B d A 0 I 2 x Ldx : B 0 IL 2 dx x h h w 0 IL 2 ln h w h (b)  d B dt d dt 0 IL 2 ln h w h 0 L 2 ln h w h dI dt 4 10 7 T mA 1.00 m 2 ln 1.00 10.0 1.00 10.0 A s 4.80 The long wire produces magnetic flux into the page through the rectangle, shown by the first hand in the figure to the right.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 6

chap23solns1 - Faradays Law and Inductance CHAPTER OUTLINE...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online