Answers

2015-11-19T20:01:21+08:00
Electricity can produce heat and light through "joule heating effect". It happens whenever the current passes through a metal. With this, it forms heat. And in some appliances, through this effect, it helps in lighting bulbs by passing through the copper inside the bulb.
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2015-11-21T18:15:20+08:00
Electric current is produced across the metal filament, causing them to vibrate, which produces heat. Then as the current increases, the excited electrons begin to 'jump back and forth' between higher and lower energy states,which we see as light
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