Physics-Magnetic Force on Current
NEET Physics Magnetic Force on Current MCQ Question
Type: MCQ-diagram based-Medium-Class 12
Consider a straight current-carrying wire placed vertically. A magnetic compass needle is placed near the wire. Which of the following best describes the alignment of the compass needle due to the magnetic field created by the current?
A
The needle aligns tangentially to a circle centered on the wire.
B
The needle aligns parallel to the wire.
C
The needle aligns perpendicular to the wire.
D
The needle does not deflect at all.
Correct Answer
Option A
Detailed Explanation
Hans Christian Oersted discovered that a current in a straight wire causes a nearby magnetic compass needle to align tangentially to an imaginary circle centered on the wire with its plane perpendicular to the wire.
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