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The magnetic induction at centre O Fig....

The magnetic induction at centre O Fig.

A

`(mu_0I)/(2a)+(mu_0I)/(2b)ox`

B

`(3mu_0I)/(8a)+(mu_0I)/(8b)ox`

C

`(3mu_0I)/(8a)-(mu_0I)/(8b)ox`

D

`(3mu_0I)/(8a)+(mu_0I)/(8b)odot`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) `B=3/4[(mu_0I)/(2a)]+1/4[(mu_0I)/(2b)]`
`B=(3mu_0I)/(8a)+(mu_0I)/(8B)`
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CENGAGE PHYSICS-SOURCES OF MAGNETIC FIELD-Exercise (single Correct )
  1. The resistances of three parts of a circular loop are as shown in Fig...

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  2. Five very long, straight insulated wires are closely bound together to...

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  3. The magnetic induction at centre O Fig.

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  4. The magnetic field at centre O of the arc in Fig.

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  5. Three long, straight and parallel wires are arranged as shown in Fig. ...

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  6. Two long thin wires ABC and DEF are arranged as shown in Fig. They car...

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  7. The magnetic field at O due to current in the infinite wire forming a ...

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  8. A current I flows through a thin wire shaped as regular polygon of n s...

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  9. A wire is bent in the form of a circular arc with a straight portion A...

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  10. The field due to a wire of n turns and radius r which carries a curren...

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  11. Two identical wires A and B have the same length l and carry the same ...

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  12. Four infinite thin current carrying sheets are placed in Y-Z plane. Th...

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  13. A steady current is flowing in a circular coil of radius R, made up o...

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  14. The magnetic field at the centre of the circular loop as shown in Fig....

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  15. Two parallel wire carrying equal currents in opposite directions are p...

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  16. Figure shows three cases: in all case the circular part has radius r a...

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  17. An otherwise infinite, straight wire has two concentric loops of radii...

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  18. Current I1 and I2 flow in the wires shown in Fig. The field is zero at...

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  19. For c=2a if, the magnetic field at point P will be zero when

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  20. An infinetely long conductor PQR is bent tor form a right angle as sho...

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