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omework 5 Begin Date: 2/13/2017 12:00:00 PM Due Date: 2/27/2017 11:59:00 PM End

ID: 3162912 • Letter: O

Question

omework 5 Begin Date: 2/13/2017 12:00:00 PM Due Date: 2/27/2017 11:59:00 PM End Date: 2/27/2017 11:59:00 PM (8%) Problem 1: A wire of length L 0.35 m and mass m 0.055 kg carries a current of I 0.85 A. The wire is floating at rest in a magnetic field as shown in the figure. x x x x x x x Randomized Variables L 0.35 m m 0.055 kg I 0.85 A X X X X X X X Otheexpertta.com 25% Part (a) What are the forces acting on the wire, and which directions do they go? 25 Part (b) Express the magnitude of the magnetic force in terms of the current I, length Land the magnetic field B. 25% Part (c Given the fact that the wire is floating at rest, derive an expression for B Grade Summary Deductions Potential 100%

Explanation / Answer

here,

c)

as the wire is at rest

net force on wire must be zero

the magnetic force acting on the wire is equal to gravitational force acting on it

so,

B*I*L = m * g

B = m*g/(I*L)

the expression for magnetic feild is B = m*g/(I*L)