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Question
The magnetic field of solenoid can not be increased by:
Options
increasing the number of turns in the solenoid.
increasing the strength of current flowing through the solenoid.
placing a stainless steel core within the solenoid.
placing a laminated soft iron core within the solenoid.
MCQ
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Solution
Placing a stainless steel core within the solenoid.
Explanation:
The magnetic field of a solenoid increases with more turns, more current, and a soft iron or laminated soft iron core. Stainless steel is not a soft magnetic material like soft iron, so it does not increase the magnetic field.
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