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Keeping current per unit length of arc c...

Keeping current per unit length of arc constant, the variation of magnetic field at the centre of an arc (B) with the angle subtended by the arc at the centre `(theta)` can be best represented by

A

B

C

D

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The correct Answer is:
C
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AAKASH INSTITUTE-MOVING CHARGES AND MAGNETISM-Assignment (Section B) Objective Type Questions (One option is correct)
  1. A wire PQR carrying a current l is bent as shown in the figure. It is ...

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  2. In the figure, the current l enters the circular loop of uniform wire ...

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  3. An electron is fired parallel to uniform electric and uniform magnetic...

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  4. The magnetic field inside a toroidal solenoid of radius R is B. If the...

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  5. A square loop of edge 'a' carries a current l. The magnetic field at t...

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  6. A proton, a deuteron and an alpha particle moving with equal kinetic ...

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  7. A charge q enters into a magnetic field (B) perpendicularly with veloc...

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  8. A solid metallic cylinder carriers a direct current. The magnetic fiel...

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  9. Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are pl...

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  10. For a given length l of wire carrying a current l, how many circular t...

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  11. Which of the following properties of magnetic line of force differs th...

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  12. The earth's magnetic induction at a certain point is 7xx10^(-5) Wb/m^(...

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  13. A long thin hollow metallic cylinder of radius 'R' has a current i amp...

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  14. A charge q is spread uniformly over an insulated loop of radius r. If ...

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  15. If plane of coil and uniform magnetic field B(4T0 is same then torque ...

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  16. What is the force experienced by a semicircular wire of radius R when ...

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  17. Suppose that a proton travelling in vacuum with velocity V(1) at right...

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  18. When two parallel wires carrying current l and 2l in same direction ar...

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  19. Calculate the torque acting upon the following structure carrying curr...

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  20. Keeping current per unit length of arc constant, the variation of magn...

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