NEET UG PHYSICS MCQ: CURRENT ELECTRICITY

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Which statement is true?
(i) Kirchoff’s law is equally applicable to both

\mathrm{AC}

and

\mathrm{DC}

.

(ii) Semiconductors have a positive temperature coefficient of resistance.

(iii) Meter bridge is greater sensitive when the resistance of all four arms of the bridge is of the same order.

(iv) The emf of a cell depends upon the size and area of electrodes.

View answer and explanation

Correct option: C

(iii) and (iv)

Option C ((iii) and (iv)) is correct because a meter bridge is most sensitive when the resistances are of the same order, and the emf of a cell depends on the size and area of the electrodes.

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T

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