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प्रश्न
How does a magnetic field set up by a solenoid change when a soft iron core is inserted inside solenoid?
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उत्तर
By placing a soft iron core inside the solenoid, the magnetic field becomes more intense.
संबंधित प्रश्न
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(i) A straight wire conductor passes vertically through a piece of cardboard sprinkled with iron filings. Copy the diagram and show the setting of iron filings when a current is passed through the wire in the upward direction and the cardboard is tapped gently. Draw arrows to represent the direction of the magnetic field lines.

(ii) Name the law which helped you to find the direction of the magnetic field lines.
