Corky
Member
Hello everyone,
i am happy with ohms law and the concept of voltage supply and the resistance in a circuit determines how much cureent is 'Drawn' BUT...
i have recently been told that something with a set resistance can draw more current than i would initially think with the result leading to a drop in voltage from the supply, im really confused by this and have had it explained a few ways which i dont understand
i understand by ohms law something has to 'give' either less current more resistance or less voltage but how does the load decide what current it has?
I think i have worded this ok but im struggling to understand myself so any questions welcome
p.s. specifically were talking about dc motor output and when the load current increases but the resistance stays the same the voltage across the generator decreases.
i am happy with ohms law and the concept of voltage supply and the resistance in a circuit determines how much cureent is 'Drawn' BUT...
i have recently been told that something with a set resistance can draw more current than i would initially think with the result leading to a drop in voltage from the supply, im really confused by this and have had it explained a few ways which i dont understand
i understand by ohms law something has to 'give' either less current more resistance or less voltage but how does the load decide what current it has?
I think i have worded this ok but im struggling to understand myself so any questions welcome
p.s. specifically were talking about dc motor output and when the load current increases but the resistance stays the same the voltage across the generator decreases.