Q: A coil 4.00 cm in radius, containing 500 turns
A coil 4.00 cm in radius, containing 500 turns, is placed in a uniform magnetic field that varies with time according to B = (0.0120 T/s) t + (3.00 × 10-5 T/s4) t4. The coil is connected to a 600-Ω re...
See AnswerQ: The current in the long, straight wire AB shown in Fig
The current in the long, straight wire AB shown in Fig. E29.7 is upward and is increasing steadily at a rate di/dt. Figure E29.7: (a). At an instant when the current is i, what are the magnitude an...
See AnswerQ: How fast (in m/s and mph) would a
How fast (in m/s and mph) would a 5.00-cm copper bar have to move at right angles to a 0.650-T magnetic field to generate 1.50 V (the same as a AA battery) across its ends? Does this seem like a pract...
See AnswerQ: Airplanes and trains move through the earth’s magnetic field at rather high
Airplanes and trains move through the earth’s magnetic field at rather high speeds, so it is reasonable to wonder whether this field can have a substantial effect on them. We shall use a typical value...
See AnswerQ: A long, thin solenoid has 400 turns per meter and radius
A long, thin solenoid has 400 turns per meter and radius 1.10 cm. The current in the solenoid is increasing at a uniform rate di/dt. The induced electric field at a point near the center of the soleno...
See AnswerQ: Suppose that the parallel plates in Fig. 29.23 have
Suppose that the parallel plates in Fig. 29.23 have an area of 3.00 cm2 and are separated by a 2.50-mm-thick sheet of dielectric that completely fills the volume between the plates. The dielectric has...
See AnswerQ: The body contains many small currents caused by the motion of ions
The body contains many small currents caused by the motion of ions in the organs and cells. Measurements of the magnetic field around the chest due to currents in the heart give values of about 10 µG....
See AnswerQ: Two coils have mutual inductance M = 3.25 × 10
Two coils have mutual inductance M = 3.25 × 10-4 H. The current i1 in the first coil increases at a uniform rate of 830 A/s. (a). What is the magnitude of the induced emf in the second coil? Is it co...
See AnswerQ: Two toroidal solenoids are wound around the same form so that the
Two toroidal solenoids are wound around the same form so that the magnetic field of one passes through the turns of the other. Solenoid 1 has 700 turns, and solenoid 2 has 400 turns. When the current...
See AnswerQ: A toroidal solenoid with mean radius r and cross-sectional area
A toroidal solenoid with mean radius r and cross-sectional area A is wound uniformly with N1 turns. A second toroidal solenoid with N2 turns is wound uniformly on top of the first, so that the two sol...
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