Statement (I) : The temperature coefficient of resistance for most of metals in pure form is positive. Statement (II) : A metal wire 2 {mm} in diameter carries a charge of 360 \pi {C} in two hours. If the metal contains 5 \times 10^{22} free electrons \/ {cm}^3, then drift velocity of the electrons in the wire is 6.25 \times 10^{-6} {m} \/ {s}. Statement (III) : Semiconductors like pure germanium does not obey Ohm's law for all range of electric field values. Which of the following is correct?

Correct Answer is : Statements I, II, III are true.

Statements I, II, III are true.

Statements I, II are true, but statement III is false.

Statements II, III are true, but statement I is false.

Statements I, II, III are false.

TS EAMCET 19-July-2022 Shift 2 Solved Paper

Section: Physics

Question : 106 of 160

Marks: +1, -0

Statement (I) : The temperature coefficient of resistance for most of metals in pure form is positive.
Statement (II) : A metal wire 2mm in diameter carries a charge of 360πC in two hours. If the metal contains 5×1022 free electrons ∕cm3, then drift velocity of the electrons in the wire is 6.25×10−6m∕s.
Statement (III) : Semiconductors like pure germanium does not obey Ohm's law for all range of electric field values.
Which of the following is correct?

Statements I, II, III are true.
Statements I, II are true, but statement III is false.
Statements II, III are true, but statement I is false.
Statements I, II, III are false.

Validate

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