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What is an electomagnet ? How the strege...

What is an electomagnet ? How the stregenth of the electromagnet can be increased ?

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What is an electromagnet? State two ways by which the strength of an electromagnet can be increased

(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?