885_Physics ProblemsTechnical Physics

885_Physics ProblemsTechnical Physics - Chapter 31 Section...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 31 225 Section 31.4 Induced emf and Electric Fields P31.32 (a) dB dt tt =− 600 800 2 .. ε = d dt B Φ At t = 200 . s , E Rd B d t r == π 2 2 2 2 800 00250 20 0 5 0 0 bg b g . Fq E × 800 10 21 N (b) When 600 0 2 −= , t = 133 s FIG. P31.32 P31.33 dB dt t = 00600 . εππ = d dt r dB dt rE B Φ 1 2 1 2 At t = 300 s , E r r dB dt = F H G I K J = ⋅⋅ F H G I K J 1 2 1 2 00200 1 . m 2 Ts s Ns 1 T C m 2 ej E 180 10 3 1 . N C perpendicular to and counterclockwise r FIG. P31.33 P31.34 (a) E ⋅= z d d dt B A Φ 2 2 ππ rE r dB dt = so Et = 987 100 .c o s mV m b g (b) The E field is always opposite to increasing B. clockwise . Section 31.5
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online