Physics
JAMB 2004
To protect a material from the influnce of an external magnetic field, the materials should be kept
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A.
square steel ring
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B.
triangular zinc ring
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C.
soft iron ring
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D.
loop of copper wire
Correct Answer: Option C
Explanation
In order to protect a material from the influence of an external magnetic field, the material is placed in a soft iron ring, usually referred to as magnetic screening.
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