NEET UG PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

Two electric bulbs, one of

200\,\,volt\,\,40\,\,watt

and the other

200\,\,volt\,\,100\,\,watt

are connected in a house wiring circuit

View answer and explanation

Correct option: C

The resistance of the filament in

40\,\,watt

bulb is more than the resistance in

100\,\,watt

bulb

The resistance of the filament in the 40 watt bulb is more than the resistance in the 100 watt bulb because power is inversely proportional to resistance at a constant voltage.

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In the absence of applied potential, the electric current flowing through a metallic wire is zero because A metallic block has no potential difference applied across it, then the mean velocity of free electrons at absolute temperature

T

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\mathrm{quantity}\,\,\mathrm{/}\,\mathrm{quantities}

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\mathrm{is}\,\,\mathrm{/}\,\,\mathrm{are}