Single Answer MCQ
Q-00001741
How does the direction of deflection of a compass needle change when the direction of current through a copper wire is reversed?
1
Remains the same
2
Reverses direction
3
Becomes erratic
4
Stops deflecting
Answer and Solution
Answer
B. Reverses direction
Solution:
When the direction of current through a copper wire is reversed, the direction of deflection of a compass needle also reverses. This phenomenon demonstrates the relationship between current flow and magnetic fields. Therefore, the correct answer is 'Reverses direction'.
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