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A student performs an experiment to study the magnetic effect of current around a current-carrying straight conductor. He reports that:
(i) the direction of deflection of the north pole of a compass needle kept at a given point near the conductor remains unaffected even when the terminals of the battery sending the current in the wire are interchanged.
(ii) For a given battery current, the degree of deflection of a N-pole decreases when the compass is kept at a point farther away from the conductor.
Which of the above observations is correct and why?

Answer

Step by step text solution for A student performs an experiment to study the magnetic effect of current around a current-carrying straight conductor. He reports that: (i) the direction of deflection of the north pole of a compass needle kept at a given point near the conductor remains unaffected even when the terminals of the battery sending the current in the wire are interchanged. (ii) For a given battery current, the degree of deflection of a N-pole decreases when the compass is kept at a point farther away from the conductor. Which of the above observations is correct and why? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 10 exams.

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Knowledge Check

  • The strength of the magnetic field around a current-carrying straight conductor

    A
    is same every where around the conductor.
    B
    is directly proportional to the square of distance of a point from the conductor.
    C
    is directly proportional to the current flowing in the conductor.
    D
    is inversely proportional to the current

  • The magnetic lines of force around a current carrying straight conductor are in the form of

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    coaxial cylinders
    B
    concentric circles
    C
    parallel lines
    D
    concentric spheres

  • The magnetic lines of force around a current carrying straight conductor are in the form of .

    A
    coaxial cylinders
    B
    concentric circles
    C
    parallel lines
    D
    concentric spheres

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