Explain how the resistance of a filament lamp changes as the potential difference across it increase
As the potential difference across the filament lamp increases the current across the lamp also increases due to Ohm's law.The increase in current flow also causes the lamp to heat up which causes the resistance of the lamp to also increase.
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All answers ▸Two students are provided with a starting pistol, a stopwatch and a long measuring tape. The starting pistol produces a loud sound and a puff of smoke. Describe how the students use the apparatus to calculate the speed of sound.
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What's the difference between distance and displacement
What is the difference between a scalar and a vector quantity?