(II) Consider two solenoids with the following specifica- tions: L₁ = 20 mH, N₁ = 80 turns; L₂ = 30 mH, N₂ = 120 turns, and M = 7 mH. At a certain instant the current in coil 1 is 2.4 A and is increasing at 4 A/s, the current in coil 2 is 4.5 A and increasing at 1.8 A/s. Find the magnitude of: (a) P11; (b) P12; (c) P21; (d) 811; (e) 12; (f) 21.

(II) Consider two solenoids with the following specifica- tions: L₁ = 20 mH, N₁ = 80 turns; L₂ = 30 mH, N₂ = 120 turns, and M = 7 mH. At a certain instant the current in coil 1 is 2.4 A and is increasing at 4 A/s, the current in coil 2 is 4.5 A and increasing at 1.8 A/s. Find the magnitude of: (a) P11; (b) P12; (c) P21; (d) 811; (e) 12; (f) 21.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter33: Inductors And Ac Circuits

Section: Chapter Questions

Problem 77PQ

See similar textbooks

Similar questions

A bar magnet falls under the influence of gravity along the axis of a long copper tube. If air resistance is negligible, will there be a force to oppose the descent of the magnet? If so, will the magnet reach a terminal velocity?
(a) At what angle (is the torque on a current loop 90.0% of maximum? (b) 50.0% of maximum? (c) 10.0% of maximum?
Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m, what is the current flowing through a rectangular toroid when the energy in its magnetic field is 2.0 × 10-6 J?
A 10-H inductor carries a current of 20 A. How much ice at 0ºC could be melted by the energy stored in the magnetic field of the inductor? (Hint: Use the value Lf= 334 J/g for ice.)
At what angular velocity in rpm will the peak voltage of a generator be 480 V. if its 500-turn, 8.00 cm diameter coil rotates in a 0.250 T field?
The accompanying figure shows a conducting ring at various positions as It moves througli a magnetic field. What is the sense of the induced em! for each of those positions?
A toroidal coil has a mean radius of 16 cm and a cross-sectional area of 0.25 cm2; it is wound uniformly with 1000 turns. A second toroidal coil of 750 turns is wound uniformly over the first coil. Ignoring the variation of the magnetic field within a toroid, determine the mutual inductance of the two coils.
Design a current loop that, when rotated in a uniform magnetic field of strength 0.10 T, will produce an emf =0 sin t. where 0=110V and 0=110V .
A 0.250 m radius, 500-turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having its plane perpendicular to a uniform magnetic field. (This is 60 rev/s.) Find the magnetic field strength needed to induce an average emf of 10,000 V.
6) R N. 3. Emk ɛ = 400V, resistor R = 100, switch S and a toroid of N = 104 number of turns are connected in series as shown in the figure. Height, Inner and outer radii of the toroid are h = 10cm, a = 10cm and b = 20cm respectively. No current flows through the toroid. Now the switch S is thrown closed at t=0. VWhat is the energy of the toroid at t-0,4s. u. = 4n × 10-7(" 4Tm x a) 18,36J b) 162,7J c) 491,75) d) 993,651 er e) 1641,56J
9) A wire of diameter d = 1 mm is wrapped around a cylindrical core of radius R = 5 cm and length I = 30 cm to build a solenoid. What is the energy stored in this solenoid when a current I = 0.2 A passes through it?
(0) Inner coil, radius R2 with N2 turns measure voltage Outer coil, radius R1 with N1 turns, AI/At = 5 amps/second Now suppose a ferromagnetic material is inside (or nearly inside) the inner coil. Does the induced voltage increase, decrease, or stay the same? 2.