L. A triangular conducting wire loop with side length L=2.5m is placed near infinite straight conducting wire which carries an electric current 1=9.5A where the distance between the infinite conductor and loop side d=0.3m , as shown in the figure. The medium has relative permeability 4,=43. The magnitude of magnetic flux passing through the loop due to the current in the infinite conductor is: The unit of magnetic flux is:
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- 6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r= 0.18 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.79 T. What is the magnitude of the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated rough half a revolution? Wb B (into paper)A small circular coil of 20 loops of wire having a radius of 1 cm is at rest in the X-y plane (so the normal to the loop points in the +z-direction). A uniform magnetic field of 0.5 T is turned on in the +x-direction. What is the magnetic flux through the loop? a. 7.85 x 10 Tm² b. 1.57 x 10 4 T m² O c. 3.14 x 10 3 T m2 O d. 0 T m2An electrically conductive rod is moving through a uniform magnetic flux at a constant velocity at right angles, as shown by its cross-section in the diagram. The velocity is in the x-direction, the rod is of length 150 mm along z, and the magnetic flux density is 0.2 T in the positive y-direction. Speed If the potential difference (voltage) across the ends of the rod is 5.8 Volts, what is the magnitude of the velocity? m/s Not perpendicular If the rod is passing through the flux with its axis not at right angles what can you be sure of? The speed to generate 5.8 V would have to be smaller. • The speed to generate 5.8 V would have to be bigger. The speed to generate 5.8 V would be the same.
- A square loop of wire with sides of 20.0cm is half in and half out of a uniform magnetic field which points out of the page as shown. The loop is moving with a speed of 3.00m/s and the strength of the magnetic field is 0.100Tesla. The total resistance of the loop is 4.00Ω. Find the magnitude and directionof the current if the loop is moving in the following directions. a.in the +x direction b.in the -x direction c.in the +y direction d.in the -y direction7= A single-turn circular loop has a radius of 25 cm, it is placed in a magnetic field of B 3.5 T which is perpendicular to the plane of the loop, see the figure below. The loop is reshaped into a perfect square without stretching the length of the loop. It takes 0.43 s to reshape the loop. What is the magnetic flux through the loop before and after it is reshaped? B X X X X X X X X X X X X X x x The final flux, Of = 5 x X X X X X X The initial flux, ¡ = 0.0000006 X Units mWb Х Х The induced emf, Emf = 34 X Units mWb x X X X What is the magnitude of the average induced emf in the loop during the reshaping process? X Units mV хх Question Help: Message instructor Post to forum
- 4. Figure in the below shows a cross section of a hollow cylindrical conductor of radii a and b, carrying a uniformly distributed current i. a) Show that the magnetic field magnitude B(r) for the radial distance rin the range. b1. The figure below shows the end-on view of a hollow cylindrical conductor. A current of 80.0 A is directed out of the page along the axis of the cylinder and is uniformly distributed over a cross section. Determine the magnitude of the magnetic field at a distance of (a) 0.500 mm, (b) 2.00 mm, and (c) 4.00 mm from the axis of the conductor. 3.00 mm 1.00 mm conductorThe magnetic field in a region of space is given by B-8 +8. A coil of N turns is oriented so that its cross-sectional area is in the x direction: A-A1. A small bulb is connected across the ends of the coil. The total resistance of the coil and the bulb is R. Find an expression for the current through the bulb if By(t) = Bo(t/to) and By-Bo where Bo and to are constants. (Use the following as necessary: A, B, N, R, to, and t. Enter the magnitude.)