Q16
1 markMCQSection A

The resultant magnetic field at point 'P' situated midway between two parallel wires (placed horizontally) each carrying a steady current I is

Figure for question 16
Magnetic Effects of Electric Current
Magnetic Field

Options

(a)in the same direction as the current in the wires.
(b)in the vertically upward direction.
(c)zero
(d)in the vertically downward direction.
Official Answer

The resultant magnetic field at point 'P' situated midway between two parallel wires (placed horizontally) each carrying a steady current I is zero.

magnetic fieldcurrent-carrying straight conductorright-hand thumb rule

Marking Scheme

  • 11 mark for correct answer
  • 20 marks for incorrect answer

Hint

Use the right-hand thumb rule to determine the direction of the magnetic field due to a current-carrying straight conductor.

Quick Oral Answer

The resultant magnetic field at point 'P' situated midway between two parallel wires (placed horizontally) each carrying a steady current I is zero because the magnetic fields produced by the two wires at point 'P' are in opposite directions, resulting in a net magnetic field of zero.

Analysis & Explanation

The question requires the application of the right-hand thumb rule to determine the direction of the magnetic field due to a current-carrying straight conductor. The correct answer is zero because the magnetic fields produced by the two wires at point 'P' are in opposite directions, resulting in a net magnetic field of zero.

Common Mistakes

  1. 1assuming that the magnetic fields produced by the two wires are in the same direction
  2. 2not considering the direction of the current in the wires

Interesting Facts

The magnetic field due to a current-carrying straight conductor is perpendicular to the direction of the current.

The magnetic field lines form concentric circles around the conductor.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Magnetic Effects of Electric Current" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Magnetic Field" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2023 paper.