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Which of the following figure shown the ...

Which of the following figure shown the magnetic flux denstiy b at a distance r from a long straight rod carrying a steady current I ?

A

B

C

D

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The correct Answer is:
D
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DC PANDEY-MAGNETIC FIELD AND FORCES-Check point
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  4. In using Ampere's law, to find the magnetic field inside a straight lo...

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  5. A strong magnetic field is applied on a stationary electron, then

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  8. An electron and a proton with equal momentum enter perpendicularly int...

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  10. A proton, a deuteron and an alpha- particle having the same kinetic en...

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  11. When a charged particle enters a uniform magnetic field its kinetic en...

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  12. A proton of energy 8 eV is moving in a circular path in a uniform magn...

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  14. A proton and an electron both moving with the same velocity v enter ...

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  15. If a charged particle is a plane perpendicular to a uniform magnetic f...

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  16. A particle is projected in a plane perpendicular to a uniform magnetic...

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  17. Lorentx force can be calculated by using the formula.

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  18. If a electron velocity is (2hatixx3hatj) and it subjected to a magneti...

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  19. A beam of protons with a velocity of 4 X 10 ^5 ms^(-1) enters a unifor...

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