#8 FUNDAMENTALS OF ELECTRICITY, MAGNETISM, AND CIRCUITSWhat is the SI unit of9.a. magnetic fluxb. magnetic flux densityc. magnetic field intensityd. magnetomotive forces and ProblemsP.Ic sources G, G, and G; (Fig. 57)e voltages as follows:13ATnb14 TE =-100 Vpermeability of cast iron at 0.2 T, 0.6 T. 2nA OF- =A 09+ = 70.7 T.8.We want to produce a flux density of 0.6Tin an air gap having a length of 8 mm.the actual polarity (+)(-) of the ter-in each case.15 ReCalculate the mmf required.plem 1, if the three sources are con-in series, determine the voltage andy across the open terminals if the fol-terminals are connected together.minals 2-3 and 4-5minals 1-4 and 3-6minals 1-3 and 4-66.Conductor AB in Figure 29 carries a currentof 800 A flowing from B to A.a. Calculate the force on the conductor.b. Calculate the force on the moving N pole.c. Does the force on the N pole act in thesame direction as the direction of rotation10 a. Draw the waveshape of a sinusoidal vol-ing to Fig. 58, show the voltage andual polarity of the generator terminalsants 1, 2, 3, and 4.ductor 2 m long moves at a speed ofh through a magnetic field having aensity of 0.6 T. Calculate the inducedfrequency of 5 Hz.b. If the voltage is zero at t = 0, what is uevoltage at t =5 ms? 75 ms? 150 ms?11 A sinusoidal current has an effective vahaving 200 turns links a flux ofb. produced by a permanent magnet.agnet is moved, and the flux linkingl falls to 1.2 mWb in 0.2 s. Calculateerage voltage induced.12 A siral voltage of 120 V is applied toFigureSee ProreCaloective current in the resistor912.ge across the resistoras 1 and 2.9.

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Answered: 0.7 T. 8 We want to produce a flux…

0.7 T. 8 We want to produce a flux density of 0.6T in an air gap having a length of 8 mm. Calculate the mmf required. 1 Co

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter30: Sources Of The Magnetic Field

Section: Chapter Questions

Problem 30.5OQ: Two long, straight wires cross each other at a right angle, and each carries the same current I...

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Unreasonable results To construct a non-mechanical water meter, a 0.500-T magnetic field is placed across the supply water pipe to a home and the Hall voltage is recorded, (a) Find the flow rate through a 3.00-cm-diameter pipe if the Hall voltage is 60.0 mV. (b) What would the Hail voltage be for the same flow rate through a 10,0-cm- diameter pipe with tire same field applied?
The Earths Van Allen belts (Fig. 30.34) are a natural magnetic bottle, trapping cosmic rays that spiral back and forth between the North and South Poles. Use the shape of a cosmic rays path to describe the variation in the magnetic field strength.
Inside a motor, 30.0 A passes through a 250-turn circular loop that is 10.0 cm in radius. What i5 the magnetic field strength created at its center?
Verify the units obtained for magnetic field strength B in Example 24.1 (using the equation B=Ec ) are in fact teslas (T).
An electron moving at 4.00103 m/s in a 1.25-T magnetic field experiences a magnetic force of 1.401016 N. What angle does the velocity of the electron make with the magnetic field? There are two answers.
The current through a circular wire loop of radius 10 cm is 5.0 A. (a) Calculate themagnetic dipole moment of the loop. (b) What is the torque on the loop if it is in a uniform 0.20-T magnetic field such that p and B are directed at 300 to each other? (C) For this position, what is the potential energy of the dipole?
A 0.50-kg copper sheet drops through a uniform horizontal magnetic field of 1.5 T, and it reaches a terminal velocity of 2.0 m's. (a) What is the net map,-, eh: force on the sheet after it reaches terminal velocity? (b) Describe the mechanism responsible for this force, (c) How much power is dissipated as Joule heating while the sheet moves at terminal velocity?
(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle at 60° with the Earth’s 5.00105-T field. What is the current when the wire experiences a force of 7.00103N ? (b) If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75T field, what force is exerted on this segment of wire?
Integrated Concepts The Tethered Satellite discussed in this module is producing 5.00 kV, and a current of 10.0 A flows. (a) What magnetic drag force does this produce if the system is moving at 7.80 km/s? (b) How much kinetic energy is removed from the system in 1.00 h, neglecting any change in attitude or velocity during that time? (c) What is the change in velocity if the mass of the system is 100,000 kg? (d) Discuss the long term consequences (say, a week-long mission) on the space shuttle’s orbit, noting what effect a decrease in velocity has and assessing the magnitude of the effect.
A mass spectrometer is being used to separate common oxygen16 from the much rarer oxygen18, taken from a sample of old glacial ice. (The relative abundance of these oxygen isotopes is related to climatic temperature at the time the ice was deposited.) The ratio of the masses of these two ions is 16 to 18, the mass of oxygen-16 is 2.661026kg, and they are singly charged and travel at 5.00106m/s in a 1.20T magnetic field. What is the separation between their paths when they hit a target after traversing a semicircle?
(a) An oxygen16 ion with a mass at 2.661026kg travels at 5.00106m/s perpendicular to a 1.20T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.
Explain why the magnetic field would not be unique (that is, not have a single value) at a point in space where magnetic field lines might cross. (Consider the direction of the field at such a point.)