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Author Question: Three coplanar parallel straight wires carry equal currents I to the right as shown below. The ... (Read 556 times)

londonang

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on: Jul 28, 2018

Three coplanar parallel straight wires carry equal currents I to the right as shown below. The current in the upper two wires is directed to the right, but the current in the bottom wire is directed to the left. Each pair of wires is a distance a apart. The direction of the magnetic force on the middle wire
 
   


   
  a.
  is up out of the plane of the wires.
   
  b.
  is down into the plane of the wires.
   
  c.
  is in the plane of the wires, directed upwards.
   
  d.
  is in the plane of the wires, directed downwards
   
  e.
  cannot be defined, because there is no magnetic force on the middle wire.

Question 2

Three coplanar parallel straight wires carry equal currents I as shown below. The current in the outer wires is directed to the right, and that in the middle wire is directed to the left. Each pair of wires is a distance a apart. The direction of the magnetic force on the middle wire
 
   


   
  a.
  is up out of the plane of the wires.
   
  b.
  is down into the plane of the wires.
   
  c.
  is in the plane of the wires, directed upwards.
   
  d.
  is in the plane of the wires, directed downwards
   
  e.
  cannot be defined, because there is no magnetic force on the middle wire.


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jennafosdick

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

e


londonang

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  • Posts: 540
Reply 2 on: Jul 28, 2018
Wow, this really help

dyrone

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Reply 3 on: Yesterday
Excellent

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