What is EMI (Electromagnetic interference)?

Electromagnetic interference (EMI), additionally called radio-frequency interference (RFI) when in the radio frequency spectrum. It is a disturbance created by an outside source which influences an electrical circuit by electromagnetic induction, electrostatic coupling. EMI as often as possible influences AM radios. It can likewise influence cell phones, radios, and TV. EMI can be utilized for radio jamming, as in electronic warfare.