WebThe brightness of a light bulb having a specific resistance increases if the current through it increases. For the circuit shown in the figure below, how does the brihtness of the light … WebJul 27, 2016 · The light bulb is in series with the wires in the lamp and wall. Since the current through all elements in a series is the same (neglecting capacitance), the elements with higher resistance will dissipate more heat. You want the light bulb to heat up, not your wires in your walls (which can cause fires). It all goes back to the basics: ##P = IV##.

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WebFeb 29, 2024 · The resistance of a light bulb changes with the temperature of the filament in the bulb, and therefore changes with the voltage applied to the bulb. The resistance … WebFeb 16, 2012 · While it is true that adding a variable resistance in series with a light bulb will lower the current and therefore lower the power (as the resistance increases) the fact remains that power is wasted in the form … infinity war streaming vf

what is the resistance of a light bulb if a potential difference of 120 ...

WebSo in a light bulb, because the temperature increases when it is illuminated, its resistance changes...we then have three variables and the relation between the current and the potential difference no longer gives a straight line (since its gradient, the resistance, is … I think that Kirchhoff's junction rule is a bit unclear about the fact that while the … Current is the change in charge over the change in time. R = ρ l A R =\dfrac{\rho … http://physics.bu.edu/~duffy/ns543_spring2011_notes07/powerpoint_class07.pdf Web594 1) The current through a lightbulb connected across the terminals of a 125 V outlet is 0.5 A. At what rate does the bulb convert electric energy to light? (Assume 100 percent efficiency) P=IV or 0.5 (125)=. 63 W or J/S. 594 2) A car batter causes a current of 2 A through a lamp and produces 12 V across it. infinity war sub indo 1080