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A closely wound flat circuar coil of 25 ...

A closely wound flat circuar coil of `25` turns of wire has diameter of `10 cm` which carries current of `4 A`, the flux density at the centre of a coil will be

A

`1.679xx10^(-5)`tesla

B

`2.028xx10^(-4)` tesla

C

`1.257xx10^(-3)`tesla

D

`1.512xx10^(-6)` tesla

Text Solution

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The correct Answer is:
C
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ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
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  8. Two infinitely long parallel wires carry equal current in same directi...

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  11. A long solenoid has n turns per metre and current IA is flowing throug...

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  12. A wire carrying current I is shaped as shown. Section AB is a quarter ...

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  15. Which of the following is a unit of permeability ?

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  16. A long straight wire carries a current of pi amp. The magnetic field d...

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  17. When a certain length of wire is turned into one circular loop, the ma...

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  18. Gauss is unit of which quantity

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