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Light from a bathroom bulb gets dimmer when the geyser is switched ON . why?
Wiki User
∙ 13y ago
When geyser is connected there is a substantial increase in the line current. So the drop due to line resistance increases(line current * line resistance). Because of this available voltage for the bulb comes down(Vline - line drop). So it becomes dimmer. It is not becoming dimmer for a moment but continously it will be dim. May be your eyes are not able to sense it. If you watch carefully it can be seen. But when a large motor is switched on what you have told happens. Because motor draws more current for starting.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe geyser obviously draws a very large start-up current, which causes voltage drop in the local area, i.e. your house.
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