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Physics

Figure shows a coil wound around a soft iron bar XY. (a) State the polarity at the end X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of the electromagnet so formed.

Figure shows a coil wound around a soft iron bar XY. State the polarity at the end X and Y as the switch is pressed. Suggest one way of increasing the strength of the electromagnet so formed. Magnetism, Concise Physics Solutions ICSE Class 9.

Magnetism

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Answer

(a) The polarity at X — south pole and at Y — north pole.

(b) The strength of the electromagnet so formed can be increased by increasing the current in the coil.

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