The accompanying figure shows a cross-section of a long, hollow, cylindrical conductor of inner radius T₁ = 3 cm and outer radius 7₂ = 6.5 cm. A 38-A current distributed uniformly over the cross-section flows into the page. Calculate the magnetic field at r = 0.5 cm, r = 4 cm, and r = 7.5 cm. Hints 11 12 N a. Magnetic field at r = 0.5 cm is 8.994E-6 b. Magnetic field at r = 4 cm is 0 c. Magnetic field at r = 7.5 cm is 1.0133E-4 T. Additional hint for (a) XT. Additional hint for (b) ✓T. Additional hint for (c) Use the "E" notation to enter your answer in scientific notation. For example, to enter 3.14 × 10-¹2, enter "3.14E-12".

29.5. A magnetic flux of 50 µWb passes through a perpendicular loop of wire having an area of 0.78 m2. What is the magnetic flux density? Ans. 64.1 uT 28 6

A strip of copper 220 um thick and 4.70 mm wide is placed in a uniform magnetic field of magnitude B = 0.96 T, that is perpendicular to the strip. A currenti- 25 Ais then sent through the strip such that a Hall potential difference Vappears across the width. Calculate V. (The number of charge carriers per unit volume for copper is 8.47 x 102 electrons/m) Number Units

The figure shows the cross section of a long conducting cylinder with inner radius a= 2cm and outer radius b-4cm. the cylinder carries a current out of the page and the current density in the cross section is given by j=cr^2 with c=3x10^6 A/m^4 and r in meters What is the magnetic field B at a point 3 cm from the central axis of the cylinder?

A 17-A current is uniformly distributed in a wire with a diameter of 9.17 mm. Find the magnetic field magnitude (in μT) a distance of 3.02 mm from the wire's center.