3. A flat surface with area 7.0 cm² in a uniform magnetic field B. The magnetic flux through this surface is +0.70 mWb. Find the magnitude of the magnetic field and the direction of the area vector A if the flat surface is tilted 50° to the horizontal.
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- Physics 6. A loop of area 0.250 m2 is in a uniform 0.020 0-T magnetic field. If the flux through the loop is 3.8310-3 T·m2, what angle does the normal to the plane of the loop make with the direction of the magnetic field?75. A circular loop of wire with a diameter of 8.0 cm lies in the zx plane, centered about the origin. A uniform magnetic field of 2,500 G is oriented along the +y direction. What is the magnetic flux through the area of the loop? H.W10. Two long, straight wires are separated by distance, d = 19.0 cm. The wires carry currents of I = 7.00 A and I2 = 8.50 A in opposite directions, as shown in the figure. Find the magnitude of the net magnetic field at point (B). Let r1 13.0 cm, r2 = 8.00 cm, and r3 = 13.0 cm. T.
- 2. A straight horizontal copper rod carries a current of 60.0 A from west to east in a region between the poles of a large electromagnet. In this region there is a horizontal magnetic field toward the northeast (that is, 65° north of east) with magnitude 2.10 T. a. Find the magnitude and direction of the force on a 125-m section of rod. b. While keeping the rod horizontal, how should it be oriented to maximize the magnitude of the force? What is the force magnitude in this case?give answer of a and b.3
- 3. A long cylindrical wire of radius R carrios a current I. The current density is non-uniform and can be expressed as J(r) = Jor? for 0 < r1. A magnetic field has a magnitude of 1.50 × 10-³ T, and an electric field has a magnitude of 4.00 × 10³ N/C. Both fields -3 point in the same direction. A positive 2.5 µC charge moves at a speed of 2.50 × 106 m/s in a perpendicular to both fields. Determine the magnitude of the net force that acts on the charge. N ssfánection that is 0 ssf60 sf60 ss 50 ssf6 €60 ssf60 ssNote: The problems and reading are a continuation of reading on Magnetic Fields. Show all your work to arrive at a formulation for problems if necessary. A complete formulation without having to substitute numbers is sufficient as an answer.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. bA hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 14 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor. a. 0.42 mT b. 0.94 mT c. 0.53 mT d. 0.62 mT e. 1.12 mT5. A cylindrical conductor with radius R carries a current that is nonuniformly distributed over the cross-section of the conductor, whose the current density is J = ar, a is a constant and > is the radial distance from the cylinder axis. (1) Find the total current in the conductor. (2) Find the magnetic field B as a function of the distance from the conductor axis for points both inside (r R) the conductor.Recommended textbooks for youCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
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