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Figure shows an arrangement in which lon...

Figure shows an arrangement in which long parallel wires carrying equal currents into or out of the page of paper at the corners of a square. The magnetic field at the centre of square is

A

`(mu_(0)l)/(2pir) sqrt2`

B

`(2mu__(0)l)/(2pir) sqrt2`

C

`(4mu_(0)l)/(2pir)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-MOVING CHARGES AND MAGNETISM-Assignment (Section B) Objective Type Questions (One option is correct)
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  2. A ring carrying current l lies in x-z plane as shown. A short magnetic...

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  3. Figure shows an arrangement in which long parallel wires carrying equa...

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  4. The magnetic field at the centre of dotted circle in the arrangement s...

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  5. In an attempt to increases the current sensitivity of a moving coil ga...

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  6. What is the magnetic field |vec(B)| at the point P due to a current ca...

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  7. A wire of infinite length bent as shown in figure carries current l. W...

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  8. A wire PQR carrying a current l is bent as shown in the figure. It is ...

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

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

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

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  12. A square loop of side a carris a current I. The magnetic field at the ...

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

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

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

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  16. Two identical magnetic dipoles of magnetic moments 1.0 A-m^(2) each, a...

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

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

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  19. The earth's magnetic field at a given point is 0.5 xx 10^(-5) Wb m^(-2...

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  20. A long thin hollow metallic cylinder of radius R has a current I amper...

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