how does on electric bulb glows? name the principal behind the same
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An electric bulb works on the principle of hearing effect of current. It consists of a tungsten filament with a coating of thorium. This filament gets heated up to emit light when current passes through it.
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first there was a electric connection which is connected to your switch call electrician for that because if you becoming master in it you get shock zzz ok and then turn on switch only
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