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9) The nail in the diagram shown below can attract paper clips when the currentsupply is switched on. Greater number of paper clips are attracted when (i) ThreeElectric cells of 1.5 V are used instead of a 9V battery (ii) Insulated copper wire iswrapped around a soft iron core (iii) The number of turns of insulated wirearound the soft iron core are increased (iv) The switch is sometimes kept in 'OFF"Position and sometimes switched'ironnail+BatteryActivateGo to Sett |
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Answer» nice question Explanation: |
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