In which among the following the principle of electromagnetic induction is not involved ? 

Monjur Alahi

In which among the following the principle of electromagnetic induction is not involved ? 

A) In security check, where people are made to walk through a large upright coil of wire 

B) Working of tape recorder

C) Working of an electric bulb 

D) Working of ATM cards


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Salim Ahmed Kawsar

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C) Working of an electric bulb

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