PHYS-1700/2100PHYS-1700/2100 III5 Ampere’s LawNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN...
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Transcript of PHYS-1700/2100PHYS-1700/2100 III5 Ampere’s LawNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN...
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 91
[Insert puzzler here]
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 92
ITEM DURATION START
Introductory Concept Survey (Individual) 0:10 0:00
Path Integral of Magnetic Field, Two Cases (Analysis) 0:25 0:10
Concept Questions for Ampere's Law 0:15 0:35
Exploring Ampere's Law (EM Field Simulation) 0:20 0:50
The Soleniod (Analysis) 0:10 1:10
Magnetizing/Demagnetizing Iron Sample 0:15 1:20
Concept Survey Re-vote (Group Discussion) 0:10 1:35
Dismissal 1:45
AGENDA
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 93
1 of 3
Closed loops A and B are drawn in the vicinity of a long straight current carrying wire. Loop A lies in a plane perpendicular to the wire, while B lies in a plane that is nearly parallel with the wire. The path integral of the magnetic field for B is
1. Greater than that for A.2. Equal to that for A.3. Less than that for A.
A
B
I
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 94
2 of 3Imagine two line currents flowing perpendicular to the display, equal in magnitude but opposite in direction. Consider the two loops shown, a and b. Which is true about the path integral of B around the two loops?
1. It is zero for both.2. It is the same for both, but not zero.3. It is zero for a but not for b.4. It is zero for b but not for a.
II
a
b
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 95
3 of 3
A solenoid is driven by 60 Hz AC. This means that the magnetic field changes direction inside the solenoid 60 times a second. An iron (ferromagnetic) rod
1. Will feel an attraction to the solenoid.2. Will feel a repulsion by the solenoid.3. Will have no average force applied to it.
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 96
ITEM DURATION START
Introductory Concept Survey (Individual) 0:10 0:00
Path Integral of Magnetic Field, Two Cases (Analysis) 0:25 0:10
Concept Questions for Ampere's Law 0:15 0:35
Exploring Ampere's Law (EM Field Simulation) 0:20 0:50
The Soleniod (Analysis) 0:10 1:10
Magnetizing/Demagnetizing Iron Sample 0:15 1:20
Concept Survey Re-vote (Group Discussion) 0:10 1:35
Dismissal 1:45
AGENDA
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 97
1 of 3
Closed loops A and B are drawn in the vicinity of a long straight current carrying wire. Loop A lies in a plane perpendicular to the wire, while B lies in a plane that is nearly parallel with the wire. The path integral of the magnetic field for B is
1. Greater than that for A.2. Equal to that for A.3. Less than that for A.
A
B
I
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 98
2 of 3Imagine two line currents flowing perpendicular to the display, equal in magnitude but opposite in direction. Consider the two loops shown, a and b. Which is true about the path integral of B around the two loops?
1. It is zero for both.2. It is the same for both, but not zero.3. It is zero for a but not for b.4. It is zero for b but not for a.
II
a
b
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 99
3 of 3
A solenoid is driven by 60 Hz AC. This means that the magnetic field changes direction inside the solenoid 60 times a second. An iron (ferromagnetic) rod
1. Will feel an attraction to the solenoid.2. Will feel a repulsion by the solenoid.3. Will have no average force applied to it.
PHYS-1700/2100 III5 Ampere’s Law NEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015
DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 910
1 4 1 4 1 4 1 4
2 5 2 5 2 5 2 5
3 6 3 6 3 6 3 6
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