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Which of the following correctly describ...

Which of the following correctly describes the magnetic field near a long straight wire ?

A

The field consists of straight lines perpendicular to the wire.

B

The field consists of straight lines parallel to the wire.

C

The field consists of radial lines originating from the wire.

D

The field consists of concentric circles centred on the wire.

Text Solution

Verified by Experts

The correct Answer is:
D
The field consists of concentric circles centred on the wire.
[Hint: On applying right-hand rule we find the direction of magnetic field. The field is in the form of concentric circles centred on the wire carrying current].
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U-LIKE SERIES-MAGNETIC EFFECTS OF ELECTRIC CURRENT -N.C.E.R.T.EXERCISES
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  7. List three methods of producing magnetic fields.

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  12. Name some devices in which electric motors are used.

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