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प्रश्न
Draw a labelled diagram to make an electromagnet from a soft iron bar. Mark the polarity at its ends in your diagram. What precaution would you observe while making it?
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उत्तर
The labelled diagram is shown in figure.
Precaution: The source of current must be the D. C. battery.
संबंधित प्रश्न
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Ansari Sir was demonstrating an experiment in his class with the setup as shown in the figure below.
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Based on your understanding of the phenomenon, answer the following question.
What will be observed when the Magnet starts oscillating through the coil. Explain the reason behind this observation.
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