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A circular (doughnut shaped) magnetic core has a mean path length of 50 cm and a cross sectional area of 150 cm squared. A coil of wire is wrapped around one side of the core. The core is made of Stalloy having the magnetization curve as shown on the last page.
a. Draw the magnetic core.
b. Draw the magnetic circuit.
c. If the current in the coil is limited to 20 A, how many turns of the coil are required to establish 0.024 Wb of flux in the core?
d. What is the core's relative permeability at that current level (20 A?).
e. What is its reluctance?
an electron and a proton are initially very far apart effectively an infinite distance apart. they are then brought
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Four charges, q, -q, q, and -q, are located at equally spaced inter- vals on the x axis. Their x values are -3a, -a, a, and 3a, respec- tively. Does there exist a point on the y axis for which the electric field is zero? If so, find the y value.
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a proton is located at the origin and a second proton is located on the x-axis at x 6.82 fm 1 fm 10-15 m.a calculate
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For N2 at 25oC and 1.00 atm calculate the number of collisions per second made by one molecule; the number of collisions per second per cubic centimeter; compare these values to N2 at 25oC and 1.0*10^-6 torr using the values already calculated Show a..
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