Consider two thin identical conducting wires covered with very thin insulating material. One of the wires is bent into a loop and produces magnetic field B1' at its centre when a current I passes through it. The second wire is bent into a coil with three identical loops adjacent to each other and produces magnetic field B2 at the centre of the loops when current I/3 passes through it. The ratio B1 : B2 is :
1:1
1:3
1:9
9:1
As we discussed in concept
Magnetic field due to cCrcular Current Carrying arc -
- wherein
and concept
Magnetic Field at the axis due to circular current carrying wire -
- wherein
N is numbers of turn in coil
For loop where a is the radius of the loop.
For co.l at the centre x=radius of loop
Option 1)
1:1
Incorrect Option
Option 2)
1:3
Correct Option
Option 3)
1:9
Incorrect Option
Option 4)
9:1
Incorrect Option
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