Review problems-ch30-New - Review Problems Ch 30(Sources Of Magnetic Fields Phy201 Dr.Hikmat A Hamad 1 Two long parallel wires each carry a current of

# Review problems-ch30-New - Review Problems Ch 30(Sources Of...

This preview shows page 1 - 4 out of 11 pages.

Phys201 Review Problems Ch30 Page 1 Review Problems Ch 30(Sources Of Magnetic Fields) Phy201 Dr.Hikmat A. Hamad 1. Two long parallel wires each carry a current of 5.0 A directed to the east. The two wires are separated by 8.0 cm. What is the magnitude of the magnetic field at a point that is 5.0 cm from each of the wires? Ans: 24 T 2. Each of two long straight parallel wires separated by a distance of 16 cm carries a current of 20 A in the same direction. What is the magnitude of the resulting magnetic field at a point that is 10 cm from each wire? Ans: 48 T Phys201 Review Problems Ch30 Page 2 3. Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions. What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the 30-A current and 25 cm from the other wire? Ans: 33 T 4. Two very long parallel wires carry currents in the positive x direction. One wire (current = 15 A) is coincident with the x axis. The other wire (current = 50 A) passes through the point (0, 4.0 mm, 0). What is the magnitude of the magnetic field at the point (0, 0, 3.0 mm)? Ans:2.7 mT Phys201 Review Problems Ch30 Page 3 5.A long straight wire carries a current of 40 A in a region where a uniform external magnetic field has a 30-T magnitude and is parallel to the current. What is the magnitude of the resultant magnetic field at a point that is 20 cm from the wire? 6. A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor.  #### You've reached the end of your free preview.

Want to read all 11 pages?

• Spring '12
• • •  