PN07 · Quiz — Electricity | Olive Defence NDA

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Question 1

The drift velocity of electrons in a conductor of cross-section A, carrier density n, and current I is:

Av_d = nAeI

Bv_d = I/nAe

Cv_d = nAe/I

Dv_d = I/ne

Question 2

The temperature dependence of resistance of a metallic conductor is R = R₀(1 + αΔT). For a semiconductor, the resistance:

AIncreases with temperature like metallic conductors

BDecreases with temperature

CRemains constant regardless of temperature

DFirst increases then decreases with temperature

Question 3

Kirchhoff's Voltage Law (KVL) states that the algebraic sum of potential differences around any closed loop is:

AMaximum

BMinimum

CZero (based on conservation of energy)

DEqual to the EMF of the battery

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PN07 — Electricity — Quiz