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Class 10 Science Medium Mcq English Medium

Which change will reverse the magnetic field direction around a straight wire?

Question
Which change will reverse the magnetic field direction around a straight wire?
Reversing the current
Moving the compass farther away
Using more iron filings
Changing the wire's colour
Answer
Reversing the current
Detailed Explanation
The field direction is linked to current direction, so reversing current reverses the field. — Examisthan.com
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