= 94 [tur], I = 3 [A]. Calculate numerically the magnetic field strength [A / m] in the middle
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a = 3 [cm], b = 7 [cm], h = 2 [cm], µr = 800, N = 94 [tur], I = 3 [A].
Calculate numerically the magnetic field strength [A / m] in the middle of the winding?


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- For a physics lab assignment, a student needs to create a solenoid using copper wire with diameter d = 0.500 mm. The resistance of the solenoid needs to be 3.70 and the magnetic field of the solenoid with a current of 2.90 A should be 5.30 x 10-2 T. Assume the resistance does not change significantly with temperature, and the radius of the solenoid is 1.00 cm. (Use p = 1.70 x 1080 m for the resistivity of copper.) (a) How many turns of wire does the student need? turns (b) Determine the required length (in cm) of the solenoid. cmProblem 7: A square loop of side length a =3.6 cm is placed a distance b = 0.65 cm from a long wire carrying a current that varies with time at a constant rate, i.e. I(t) = Qt, a where Q = 3.4 A/s is a constant. Part (a) Find an expression for the magnetic field due to the wire as a function of timet at a distance r from the wire, in terms of a, b, Q, t, r, and fundamental constants. Expression : B(t) = Select from the variables below to write your expression. Note that all variables may not be required. B, y, Ho, T, 0, d, g, h, j, m, n, P, Q, r, t Part (b) What is the magnitude of the flux through the loop? Select the correct expression. SchematicChoice : HoQat In 27 HoQa In HOQat 1 1 In (b+a)2 h2 HoQa In 1 1 HoQat HOQat In In 6+ a Ф— (b+ a)² (b+a)2 12 2т h2 Part (c) If the loop has a resistance of 3.5 Q, how much induced current flows in the loop? Numeric : A numeric value is expected and not an expression. I = Part (d) In what direction does this current flow? MultipleChoice : 1)…A conducting ring of electrical resistance R = 4.0 [2] and radius r = 2.0 [m] is inside an external magnetic field B=6t (T), where t is measured in seconds and whose direction is towards the inside of the page as shown in the figure. What is the magnitude of the induced current for t>0? Express your answer in Amperes and with 2 decimal places of precision. X X X X X X X X X ххххх X X ring
- Two long, parallel copper wires of diameters 2.1 mm carry currents of 10 A in opposite directions. (a) Assuming that their central axes are separated by width W = 22 mm, calculate the magnetic flux per meter of wire that exists in the space between those axes. (b) What percentage of this flux lies inside the wires? (c) Repeat part (a) for parallel currents. (a) i Units (b) i (c) i Units >A cube of edge length = 5.00 cm is positioned as shown in the figure below. A uniform magnetic field given by B = (4.9 î+ 4.0 ĵ + 3.0 k) T exists throughout the region. y l B (a) Calculate the magnetic flux through the shaded face. mWb (b) What is the total flux through the six faces? mWbProblem 14: Part (a) What is the magnitude of this acceleration, in meters per square second? a = ______