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A magnetic field can be produced by...

A magnetic field can be produced by

A

A moving charge

B

A changing electric field

C

None of these

D

Both of these

Text Solution

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The correct Answer is:
D
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ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
  1. A wire carrying current I is shaped as shown. Section AB is a quarter ...

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  2. Two long straight wires are set parallel to each other. Each carriers ...

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  3. A magnetic field can be produced by

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

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

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

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  7. Gauss is unit of which quantity

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  8. On connecting a battery to the two corners of a diagonal of a square c...

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  9. The ratio of the magnetic field at the centre of a current carrying co...

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  10. A part of a long wire carrying a current i is bent into a circle of ra...

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  11. The core of a toroid having 3000turns has inner and outer radii of 11c...

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  12. The magnetic field near a current carrying conductor is given by

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  13. A wire in the from of a circular loop of one turn carrying a current ...

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  14. A long solenoid carrying a current produces a magnetic field B alon...

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  15. A long straight wire carrying current of 30 A is placed in an exte...

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  16. The earth's magnetic field at a given point is 0.5xx10^(-5) Wb-m^(-2)....

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  17. A coil having N turns carry a current I as shown in the figure. The ma...

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  18. Two similar coils are kept mutually perpendicular such that their cent...

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  19. In the figure, what is the magnetic field at the point O?

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  20. The magnetic dipole moment of a current loop, carrying current I, havi...

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