To learn about mutual inductance from an example of a long solenoid with two windings. To illustrate the calculation of mutual inductance it is helpful to consider the specific example of two solenoids that are wound on a common cylinder. We will take the cylinder to have radius rho and length L. Assume that the solenoid is much longer than its radius, so that its field can be determined from Ampere's law throughout its entire length: B(r) middot dl = mu_0 I_encl. We will consider the field that arises from solenoid 1, which has n_1 turns per unit length. The magnetic field due to solenoid 1 passes (entirely, in this case) through solenoid 2, which has n_2 turns per unit length. Any change in magnetic flux from the field generated by solenoid 1 induces an EMF in solenoid 2 through Faraday's law of induction, E(r) middot dl = -d/dt Phi_M (t). Consider first the generation of the magnetic field by the current I_1 (t) in solenoid 1. Within the solenoid (sufficiently far from its ends), what is the magnitude B_1 (t) of the magnetic field due to this current? Express B_1 (t) in terms of I_1 (t), variables given in the introduction, and relevant constant
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Physics, 21.06.2019 15:30
What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons
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Physics, 22.06.2019 06:30
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
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Physics, 22.06.2019 11:00
The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.
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To learn about mutual inductance from an example of a long solenoid with two windings. To illustrate...
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