18.1 A coil of radius 75
mm has 250 turns and carries a current of 2.2 A. Find the magnetic field at...

Question

18.1 A coil of radius 75
mm has 250 turns and carries a current of 2.2 A. Find the magnetic field at the centre of the
coil and at a point along the axis 150 mm along the coil. How far along the axis must you go to find
the magnetic field has dropped to half its value at the centre of the coil?

Robert · Accepted Answer

18.1 A coil of radius 75 mm has 250 turns and carries a current of 2.2 A. Find the magnetic field 
at the centre of the coil and at a point along the axis 150 mm along the coil. How far along the 
axis must you go to find the magnetic field has dropped to half its value at the centre of the 
coil? 
Solution 
Radius of the coil = 75mm = 0.075m 
No of Turns = 250 
Current = 2.

18.1 A coil of radius 75 mm has 250 turns and carries a current of 2.2 A. Find the magnetic field at the centre of the coil and at a point along the axis 150 mm along the coil. How far along the axis...

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