series circuit
how does the brightness of lamps in a series circuit change with increasing current?
Original post by Wildnatxox
how does the brightness of lamps in a series circuit change with increasing current?
Is there an change to the resistance and p.d. across the lamps?
Original post by Eimmanuel
Is there an change to the resistance and p.d. across the lamps?
the question doesn't say
Original post by Wildnatxox
how does the brightness of lamps in a series circuit change with increasing current?
Original post by Eimmanuel
Is there an change to the resistance and p.d. across the lamps?
Original post by Wildnatxox
the question doesn't say
We need to look at the power dissipated in the lamps connected in series.
P = I2R
We can see that the power will increase as the current in the lamp increase even if the resistance remains constant or increase (which should be the case as the lamp is non-ohmic).
But if the resistance decrease, the situation is a bit complicated. I don't think you are required to analyse such situation.
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