Electromagnet

Wave Nature Of Electromagnetic Radiation|Characteristics Of Electromagnetic Radiations|Important Characteristics Of Wave|Relation Between Frequency, Wave Length And Velocity Of Wave|Electromagnetic Spectrum|Summary

(a) What is an electromagnet? Draw a labelled diagram to show the making of a simple electromagnet. (b) State three factors on which the strength of an electromagnet depends. How does the strength of electromagnet depend on these factors?