Did the resistance of the tungsten filament in the light bulb increase or decrea

Question

Did the resistance of the tungsten filament in the light bulb increase or decrease it got hotter? Three resistors are connected in a series circuit as shown R-1 > R_2 > R_3 Which of the resistors has the largest current through it? Which of the resistors has the largest voltage drop across it? Three resistors are connected in a series-parallel circuit as shown. R_1 > R_2 > R_3 Which potential difference would be greater, the voltage across R_2 or the voltage across R_3? Explain Which of the resistors has the largest voltage drop across it?

Explanation / Answer

1.resistance of filament decrease with incresing temperature

2.since all are in series,equal current will flow across all resistor

3.V=I*R,since current is same ,the one with largest R will have largest voltage

so R1 will have largest voltage drop

4.R2 and R3 are in parallel so voltage across both will be the same

5.Since R1 is largest,it will have largest voltage drop across it.

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