EBK FUNDAMENTALS OF APPLIED ELECTROMAGN
7th Edition
ISBN: 8220100663659
Author: ULABY
Publisher: PEARSON
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Chapter 6.2, Problem 3CQ
To determine
The direction of the current.
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Induced voltage acts like a resistance to hinder the flow of current through an inductor.
True or False
It is often more desieable to the conductor instead of the magnetic field.
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An iron core 0.4 m long and 5 cm^2
is wound with 300 turns. When a current of 0.5A flows in the coil, how much is the inductance of the coil. Assume the core has a permeability of 2500.
A single square loop of wire with sides of 0.5 meter is in a magnetic field
of 1 tesla (T). The square loop is reduced to sides of 0.25 m in 0.3 seconds.
The wire has a natural resistance of 1Q What is the magnitude of the
induced voltage? *
Chapter 6 Solutions
EBK FUNDAMENTALS OF APPLIED ELECTROMAGN
Ch. 6.2 - Explain Faradays law and the function of Lenzs...Ch. 6.2 - Prob. 2CQCh. 6.2 - Prob. 3CQCh. 6.2 - For the loop shown in Fig. 6-3, what is Vemftr if...Ch. 6.2 - Suppose that the loop of Example 6-1 is replaced...Ch. 6.4 - Suppose that no friction is involved in sliding...Ch. 6.4 - Is the current flowing in the rod of Fig. 6-10 a...Ch. 6.4 - For the moving loop of Fig. 6-9, find I when the...Ch. 6.4 - Suppose that we turn the loop of Fig. 6-9 so that...Ch. 6.5 - Contrast the operation of an ac motor with that of...
Ch. 6.5 - Prob. 7CQCh. 6.5 - Prob. 8CQCh. 6.7 - A poor conductor is characterized by a...Ch. 6.8 - When conduction current flows through a material,...Ch. 6.8 - Verify that the integral form of Ampres law given...Ch. 6.10 - Explain how the charge continuity equation leads...Ch. 6.10 - How long is the relaxation time constant for...Ch. 6.10 - Determine (a) the relaxation time constant and (b)...Ch. 6.11 - Prob. 7ECh. 6 - The switch in the bottom loop of Fig. P6.1 is...Ch. 6 - The loop in Fig. P6.2 is in the xy plane and B =...Ch. 6 - A coil consists of 100 turns of wire wrapped...Ch. 6 - A stationary conducting loop with an internal...Ch. 6 - A circular-loop TV antenna with 0.02 m2 area is in...Ch. 6 - The square loop shown in Fig. P6.6 is coplanar...Ch. 6 - The rectangular conducting loop shown in Fig. P6.7...Ch. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - A 50 cm long metal rod rotates about the z axis at...Ch. 6 - The loop shown in P6.11 moves away from a wire...Ch. 6 - The electromagnetic generator shown in Fig. 6-12...Ch. 6 - The circular, conducting, disk shown in Fig. P6.13...Ch. 6 - The plates of a parallel-plate capacitor have...Ch. 6 - A coaxial capacitor of length l = 6 cm uses an...Ch. 6 - The parallel-plate capacitor shown in Fig. P6.16...Ch. 6 - In wet soil, characterized by = 102 (S/m), r = 1,...Ch. 6 - An electromagnetic wave propagating in seawater...Ch. 6 - At t = 0, charge density v0 was introduced into...Ch. 6 - If the current density in a conducting medium is...Ch. 6 - Prob. 21PCh. 6 - If we were to characterize how good a material is...Ch. 6 - The electric field of an electromagnetic wave...Ch. 6 - The magnetic field in a dielectric material with ...Ch. 6 - Given an electric field E=xE0sinaycos(tkz), where...Ch. 6 - The electric field radiated by a short dipole...Ch. 6 - A Hertzian dipole is a short conducting wire...Ch. 6 - In free space, the magnetic field is given by...Ch. 6 - The magnetic field in a given dielectric medium is...
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Similar questions
- N=15 windings are wound on a square-section iron core with a square outer appearance. If the dimensions are w=2 cm, L1=8 cm and the magnetic permeability of the core is 0.004 H/m, how many micro Henrys is the inductance of the coil? a) 1500 b) none c) 500 d) 0.5 e) 5000arrow_forward5. An iron core 0.4m long and 5 cm?. In cross section, is wound with 300 turns. When a current of 0.5 A flows in the coil, how much is the inductance of the coil. Assume the core has a pemeability of 2500.arrow_forwardRg = 3*(106) A/Wb (Reluctance of the gap)arrow_forward
- 4. If the Core of an Electromagnet is made of Permalloy (check the Tables for Relative Permeability) and has a 250 turn coil. The cross section has dimensions of 3 cm by 4.5 cm, and the average path length is 10 cm. Determine the amount of Flux that will be developed when a Current of 350 mA flow in the coil.arrow_forwardA torroidal iron core of square cross section has an inner and outer radius of 4 cm and 6 cm respectively. It has a 2 mm air gap and is wound with 100 turns. Determine the total flux in the circuit if the coil carries a current of 100 mA. Assume the iron has the constant = 1000.arrow_forwardAn iron core 0.4 m long and 5 square cm in cross section, is wound with 300 turns. When a current of 0.5 Aflows in the coil, how much is the inductance of the coil. Assume the core has a permeability of 2500arrow_forward
- Show complete and step by step solution. It is basic electrical engineering subj.arrow_forwardShow the complete solution. 1. A solenoid 20 cm long is wound with 300 turns of wire and carries a current of 1.5 A. What is the approximate relative permeability of this core so as to produce a magnetic field of 0.6 T inside? A. 225 B. 212 C. 210 D. 280 8. Two coils have inductance of 4 mH and 9 mH and coefficient of coupling is 0.50. If the two coils are connected in series opposing, the total inductance will be A. 10 mH B. 8 mH C. 9 mH D. 7 mHarrow_forwardQuastion 3: The electromagnet in figure consist of two different materials, sheet steel (u = 60,000) and cast iron (u 80,000). If the mean path length for the Sheet steel sheet steel is 16x102 m and 5x102 m for the cast iron, while the cross- sectional area of the core is 50x104m². Determine the current I required flow throw the 500 turns winding to establish 4 wb flux in the core. Cast ironarrow_forward
- A wire with a mass of 0.1 kg and a total length of 4 m is wrapped around a square-shaped ring with a side length of 0.1 m to form a coil. The ring is suspended with one side on the horizontal axis and can rotate freely around this axis. While the ring is in a magnetic field of 10 mT in vertical direction, a current of 3.4 A is passed through it. a-) When the ring is in equilibrium, what is the angle between its surface and the magnetic field? b-) When the ring is in equilibrium, what is the torque acting by the magnetic field?arrow_forwardThrough a conducting loop, the magnetic flux changes with time as *:=6t- 181 Tm’. If the resistance of the loop is 4 2, what is the 34 - maximum induced current between t=0 and t=2 s ? O A) 9 A B) 12 A O C) 18 A D) 15 A E) 4.5 Aarrow_forward1. The iron core in the following magnetic device has a cross section of 4 cm by 5 cm. The coil has 500 turns and carries a current of 4 A. What is the flux density in the air gap b if μ00 (or the reluctance of iron core can be neglected). A. OT B. 0.25 T 10 cm 10 cm C. 0.5 T 1 cm) Gap a 0.5 cm: Gap b 10 cm D. 1.0 Tarrow_forward
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