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There are two concentric circular loops....

There are two concentric circular loops. One loop of radius r is made up of only one turn. The other loop has a radius 2r and has two turns of wire. They are arranged such that they have a common centre and their planes are perpendicular to each other. When the same current i is passed through both the coils, the magnetic field at the common centre is

A

`(mu_(0)i)/(2r)`

B

`(mu_(0)i)/(r)`

C

`(mu_(0)i)/(2r) sqrt2`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
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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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  8. A thin disc of radius R has charge Q distributed uniformly on its surf...

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  9. A short current carrying conductor is placed perpendicular to the axis...

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  10. A ring carrying current l lies in x-z plane as shown. A short magnetic...

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

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

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

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

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

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

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

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

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

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