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Artificial Magnetic Fields — Electromagnetism (Physics Gr12)

  • #1

Homework Statement


Two parallel conductors each carry 10 A of current in the same direction.
a) What is the magnetic field strength at the midpoint between these wires? (answer = 0T)
b) What is the field strength at the same point if the current ran in opposite directions? (answer = 4.0x10^-4T)

I am very confused and any help would be greatly appreciated
 

Answers and Replies

  • #2
CWatters
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Are you familiar with the right hand rule..

right_hand_rule.jpg


Make some drawings of the magnetic field with two wires.
 
  • #3
Yes I am familiar with all three of them
 
  • #4
CWatters
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Then I suggest drawing two wires "end on" and adding circular B field lines around each. See what happens in the middle.
 
  • #5
Thanks, got it
 

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