AP Polycet (Polytechnic) 2025 Previous Question Paper with Answers And Model Papers With Complete Analysis

AP POLYCET 2025
Section — B
PHYSICS

52) A continuous and closed path of an electric current is called an

A) electric charge
B) electric conduction
C) electric potential
D) electric circuit

View Answer

D) electric circuit

Explanation:A continuous and closed path of an electric current is called an
→ electric circuit

53) If a net charge Q flows across any cross-section of a conductor in time t, then the current I through the cross-section is

A) $I = \frac{Q}{t}$
B) $I = \frac{t}{Q}$
C) $I = \frac{t^2}{Q}$
D) $I = \frac{Q^2}{t}$

View Answer

A) $I = \frac{Q}{t}$

Explanation: $I = \frac{Q}{t}$

54) One coulomb is equivalent to the charge contained in nearly

A) 0.6 × 10¹⁸ electrons
B) 1.6 × 10¹⁸ electrons
C) 6.25 × 10¹⁸ electrons
D) 16 × 10¹⁸ electrons

View Answer

C) 6.25 × 10¹⁸ electrons

Explanation:1 coulomb ≈ charge of $6.25 \times 10^{18}$ electrons
→ 6.25 × 10¹⁸ electrons

55) Work done to move a unit charge from one point to the other in an electric circuit is called

A) electric potential difference
B) electric current
C) electric resistance
D) electric power

View Answer

A) electric potential difference

Explanation:Work done to move unit charge = potential difference
→ electric potential difference

56) SI unit of electrical potential difference is

A) watt
B) volt
C) ampere
D) ohm

View Answer

A) watt

Explanation:SI unit of potential difference
→ volt

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