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A square of side L meters lies in the xy...

A square of side L meters lies in the xy-plane in a region, where the magnetic field is given by `vecB=B_0 (2hati+3hatj+4hatk)T` where `B_0` is constant. The magnitude of flux passing through the square is

A

`2B_0L^2Wb`

B

`3B_0L^2Wb`

C

`4B_0L^2Wb`

D

`sqrt29B_0L^2` Wb

Text Solution

Verified by Experts

The correct Answer is:
C
Area, `vecA=L^2 hatk`
`vecB=B_0 (2hati+3hatj+4hatk)`
`phi=vecB.vecA=B_0(2hati+3hatj+4hatk).L^2hatk`
`phi=4B_0L^2`Wb
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KUMAR PRAKASHAN-ELECTROMAGNETIC INDUCTION-Section C Ncert Exemplar Solution (MCQs)
  1. A square of side L meters lies in the xy-plane in a region, where the ...

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  2. A loop, made of straight edges has six corners at A(0,0,0), B(L,0,0) ,...

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  3. A cylindrical bar magnet is rotated about its axis as in figure. A wir...

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  4. There are two coils A and B as shown in figure. A current starts flowi...

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  5. Same as problem 4 except the coil A is made to rotate about a vertical...

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  6. The self inductance L of a solenoid of length l and area of cross-sect...

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  7. A metal plate is getting heated. It can be because

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  8. An e.m.f is produced in a coil, which is not connected to an external ...

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  9. The mutual inductance M12 of coil 1 with respect to coil 2

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  10. A circular coil expands radially in a region of magnetic field and no ...

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  11. Consider a magnet surrounded by a wire with an on/off switch S as show...

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  12. A wire in the form of a tightly wound solenoid is connected to a DC so...

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  13. A solenoid is connected to a battery so that a steady current flows th...

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  14. Consider a metal ring kept on top of a fixed solenoid (say on a cardbo...

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  15. Consider a metal ring kept (supported by a cardboard) on top of a fixe...

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  16. Consider a metallic pipe with an inner radius of 1 cm. If a cylindrica...

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