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Draw the field lines of a straight current-carrying conductor, mark the directions, name the rule

The same question, asked 4 times: 2023*, 2024*, 2025*, 2026. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2023

    32 (b)
    Draw the pattern of the magnetic field produced around a vertical current carrying straight conductor passing through a horizontal cardboard. Mark the direction of current and the magnetic field lines. Name and state the rule which is used to determine the direction of magnetic field associated with a current carrying conductor.

  2. Question 2

    2023

    26
    Draw magnetic field lines produced around a straight current carrying conductor passing through a cardboard. How will the strength of the magnetic field change when the point where magnetic field is to be determined is moved away from the conductor ?

  3. Question 3

    2024

    25
    Draw the pattern of the magnetic field lines due to a straight current carrying conductor indicating the direction of current in the conductor and the direction of the corresponding magnetic field lines.

  4. Question 4

    2024

    25 (a)
    Draw a labelled diagram to show the pattern of magnetic field lines produced due to a current carrying straight conductor. Mark on it the direction of current in the conductor and the direction of magnetic field lines.

  5. Question 5

    2024

    32
    Draw a diagram to show the pattern of magnetic field lines on a horizontal sheet of paper due to a straight conductor passing through its centre and carrying current vertically upwards. Mark on it (i) the direction of current in the conductor and (ii) the corresponding magnetic field lines. State right hand thumb rule and check whether the directions marked by you are in accordance with this rule or not.

  6. Question 6

    2025

    26
    Draw the pattern of magnetic field lines due to a current carrying straight conductor. Mark on it the direction of current in the conductor and the direction of the magnetic field developed. Name the rule that helps us to determine the direction of magnetic field lines in this case.

  7. Question 7

    2025

    32
    (a) Draw a labelled diagram to show the pattern of magnetic field lines on a horizontal white board due to a straight current carrying conductor passing perpendicular through its centre. If the direction of current in the conductor is vertically downwards, mark the direction of (i) current, and (ii) magnetic field lines. (b) State the right hand thumb rule and check whether the directions marked on the diagram are in accordance with this rule.

  8. Question 8

    2026

    39 (b)
    (i) With the help of a diagram, describe an activity in brief to show that a current-carrying straight conductor produces a magnetic field around it. (ii) Two straight current-carrying conductors (A) and (B) are shown in the figures below : (I) Mark the direction of the magnetic fields around these current-carrying conductors (A) and (B). (II) Compare the strengths of magnetic fields produced (1) at points P and Q and (2) at points Q and R due to these current-carrying conductors, qualitatively.