This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: PHYS1200 PHYSICS II SPRING 2006 HOMEWORK SOLUTIONS CLASS 8. 30.02, 30.03, 30.08, 30.22 30.02. a) mV . 7 . 12 mWb] ) . 7 . 6 [( 2 + = + = = t t t dt d dt d B E At t = 2.0 s, . 7 ) . 2 ( . 12 + = E mV E = 31 mV b) The flux is increasing, so Lenzs law tells us that the field produced by the induced current must point into the page to oppose the increase. The current must flow clockwise around the circuit, or: to the left in resistor R . 30.03. dt dB r dt dB r dt d r B BA dt d B B B 2 2 2 and , so , where ,  = = = =  = E E mV 11 Then, s. / T 25 . s . 4 s . 6 T 5 . T . s, 6 < < s 4 For c) mV . Then, s. / T . s . 2 s . 4 T 5 . T 5 . s, 4 < < s 2 For b) mV 11 Then, s. / T 25 . s . s . 2 T . T 5 . s, 2 < < For a) T) / s mV 45 ( T) / s V 045 . ( ) m 12 . ( Then, 2 = = = = = = = = =  =  = = E E E E dt dB t dt dB t dt dB t dt dB dt dB dt dB 30.08. The field (due to the current in the straight wire) is outofthepage in the upper half of the circle and is into the page in the lower half of the circle. Due to the symmetry, the the circle and is into the page in the lower half of the circle....
View
Full
Document
This note was uploaded on 04/07/2008 for the course PHYS 1200 taught by Professor Stoler during the Spring '06 term at Rensselaer Polytechnic Institute.
 Spring '06
 Stoler
 Physics, Work

Click to edit the document details