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NEET UG PHYSICS MCQ: CURRENT ELECTRICITY

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The tolerance level of a resistor with the colour code red, blue, orange, gold is

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Correct option: A

\pm \,\,5\,\,\%

Option A (

\pm \\,5\\,\\%

) is correct because gold as the fourth band in resistor color code indicates a tolerance of 5%.

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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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(B) The drift velocity is inversely proportional to the area of cross-section of given conductor.
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(D) The drift velocity of electron is inversely proportional to the length of the conductor.
(E) The drift velocity increases with the increase in the temperature of conductor.
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\mathrm{quantity}\,\,\mathrm{/}\,\mathrm{quantities}

constant along the length of the conductor

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