In a bulb there is a thin wire called the filament made up of tungsten. When current passes through it, it glows and gets heated up. In a heater there is a coil of wire called element which is made up of nichrome. When current passes through element it becomes red hot and give out heat,
फ्लेमिंग का वामहस्त नियम लिखिए। Write Fleming's left hand rule.
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