Why does a bulb glow immediately when we switch on ? – InterviewSolution

1.	Why does a bulb glow immediately when we switch on ?
Answer» Solution :When we switch on any electric circuit, irrespective of length of the CONDUCTOR, an electric field is set up THROUGHOUT the conductor instantneously due to VOLTAGE of the source connected to the circuit. This electric field makes all electrons to move in a specified DIRECTION simultanceouly. hence the bulb GLOWS.

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