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The strength of the magnetic field aroun...

The strength of the magnetic field around a long straight current carrying conductor :

A

Is same everywhere around the conductor

B

Obeys inverse square law

C

Is directlyproportional to the square of the distance from the cnductor

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • The strength of the magnetic field around a long straight wire, carrying current, is

    A
    inversely proportional to the distance from the wire
    B
    inversely proportional to the square of the distance from the wire
    C
    directly proportional to the square of the distance
    D
    directly proportional to the distance from the wire

  • The strength of the magnetic field at a point r near a long straight current carrying wire is B . The field at a distance r/2 will be

    A
    `B/2`
    B
    `B/4`
    C
    `2B`
    D
    `4B`

  • The strength of magnetic field due to a straight current carrying conductor, at a given distance increases with increase in the

    A
    temperature of the conductor.
    B
    length conductor.
    C
    strength of the current.
    D
    Both (a) and (c)

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