Single Answer MCQ
Q-00001956
How does the direction of the magnetic field change when the direction of current through a copper wire is reversed?
1
Remains the same
2
Reverses direction
3
Becomes weaker
4
Becomes stronger
Answer and Solution
Answer
B. Reverses direction
Solution:
When the direction of current through a copper wire is reversed, the direction of the magnetic field around the wire also reverses. Therefore, the correct answer is 'Reverses direction'.
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