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in which case positive and negative terminals are not marked ona bulb

Asked by Sum_rar 25th January 2015, 5:26 PM
Answered by Expert
The bulb does not have any positive or negative terminal in itself.
However, when we connect a bulb to a cell or battery, then the terminal connected to positive of battery becomes positive and that connected to negative becomes negative.
When the bulb is connected to an AC supply, like that available in our homes, then the bulb will not have any positive or negative terminal marked. This is because, the AC supply changes sign after every half ccycle.
Answered by Expert 27th January 2015, 11:27 AM
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