A light bulb, rated 12V drew 0.5A when it reached a temperature of 40 degrees Celsius. It was switched on at a temperature of 25 degree Celsius. What was the current drawn by the lamp at the moment of switching? (Consider the filament as Tungsten with a temp. coefficient of 0.0051 @ 25 degree Celsius). The total length of the filament is 12 inches and cross-sectional area is 100 CM.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
A light bulb, rated 12V drew 0.5A when it reached a temperature of 40 degrees Celsius. It was switched on at a temperature of 25 degree Celsius. What was the current drawn by the lamp at the moment of switching? (Consider the filament as Tungsten with a temp. coefficient of 0.0051 @ 25 degree Celsius). The total length of the filament is 12 inches and cross-sectional area is 100 CM.
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