MasteringPhysics: Homework 8 -Chapter 29 Sections 16 (18 Points) - Google Chrome

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MasteringPhysics: Homework 8 -Chapter 29 Sections 16 (18 Points) - Google Chrome e Secure https.//session.masteringphysics.com/myct/itemView?assignmentProblemID-892504158koffset next Homework 8 - Chapter 29 Sections 1-6 (18 Points) Problem 29.25 Enhanced - with Feedback 12 of 15 Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 crn in diameter. It is tightly wound with a single layer of 1.90-mm-diameter superoonducting wire. Part A What current is needed? Express your answer with the appropriate units You may want to review (Pages 810-814) Value A Submit Previous Answers Request Answer XIncorrect: Try Again Provide Feedback Next> 12:05 PM ?? ?? 4/3/2018

Explanation / Answer

N = l / d = 1.8 / 0.0019

N = 947 turns

I = B L / mu0 N

= (1.5 * 1.8) / (4 pi * 10-7 * 947)

current needed = 2268 A

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