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What is the magnitude of the magnetic dipole moment μ of the solenoid described in Problem 51?

Short Answer

Expert verified

The magnitude of the magnetic dipole moment is0.46Am2.

Step by step solution

01

Listing the given quantities:

The length,l=25  cm=0.25m

The diameter,d=10  cm=0.10m

The number of turns,N=200

The current,i=0.29 A

02

Understanding the concept of magnetic field:

The magnitude of the magnetic dipole moment can be defined as the product of number of turns, current in that loop, and the area of that loop. Using this concept, you can calculate the magnitude of the magnetic dipole moment.

Formula:

The magnetic dipole moment is,

μ=NiA

Here, Nis the number of turns,i is the current,A is the area.

03

Calculations of the magnitude of the magnetic dipole moment:

To calculate the radius of the loop as

R=d2=0.10m2=0.05m

Now the magnetic dipole moment is given by,

μ=NiA=NiπR2=200×0.29A×3.14×(0.05m)2=0.46Am2

Hence, the magnitude of the magnetic dipole moment is 0.46Am2.

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Most popular questions from this chapter

Question: A long straight wire carries a current of 50A. An electron, traveling at1×107ms, is0.05mfrom the wire. What is the magnitude of the magnetic force on the electron if the electron velocity is directed (a) toward the wire, (b) parallel to the wire in the direction of the current, and (c) perpendicular to the two directions defined by (a) and (b)?

Show that the magnitude of the magnetic field produced at the center of a rectangular loop of wire of lengthLand widthW, carrying a current i, is

B=2μ0iπ·(L2+W2)12LW

An electron is shot into one end of a solenoid. As it enters the uniform magnetic field within the solenoid, its speed is 800m/s and its velocity vector makes an angle of30° with the central axis of the solenoid. The solenoid carries 4.0Aand has8000turns along its length. How many revolutions does the electron make along its helical path within the solenoid by the time it emerges from the solenoid’s opposite end? (In a real solenoid, where the field is not uniform at the two ends, the number of revolutions would be slightly less than the answer here.)

Question: Figure 29-31 shows four arrangements in which long, parallel, equally spaced wires carry equal currents directly into or out of the page. Rank the arrangements according to the magnitude of the net force on the central wire due to the currents in the other wires, greatest first.

In Fig. 29-83, two infinitely long wires carry equal currents i. Each follows a 90°arc on the circumference of the same circle of radius R. Show that the magnetic field Bat the center of the circle is the same as the field Ba distance R below an infinite straight wire carrying a current Ito the left.

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