Igcse Model Questions Vol1 2020 Physics Question 35

Practice objective / multiple choice question 35 from the 2020 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2020 Physics Objective / Multiple Choice Hard Difficulty
Question 35 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A long solenoid 0.5 m in length has 2000 turns and a cross‑sectional area of \(1.0\times10^{-3}\) m². The current in the solenoid is reduced uniformly from 3.0 A to 0 A in 0.20 s. A single‑turn circular loop of radius 5 cm is placed coaxially around the middle of the solenoid. (a) Calculate the average magnitude of the induced emf in the loop. (b) Find the average induced current if the loop's resistance is 2 Ω. (c) Determine the total electrical energy transferred to the loop during the 0.20 s interval.

Answer Options

A. Emf ≈ 4.7×10⁻⁴ V; current ≈ 2.4×10⁻⁴ A; energy ≈ 8.0×10⁻⁹ J
B. Emf ≈ 6.5×10⁻⁴ V; current ≈ 3.3×10⁻⁴ A; energy ≈ 1.5×10⁻⁸ J
Correct Answer C. Emf ≈ 5.9×10⁻⁴ V; current ≈ 3.0×10⁻⁴ A; energy ≈ 1.2×10⁻⁸ J
D. Emf ≈ 5.9×10⁻³ V; current ≈ 3.0×10⁻³ A; energy ≈ 1.2×10⁻⁶ J
Correct Answer
C
Correct Option:
Emf ≈ 5.9×10⁻⁴ V; current ≈ 3.0×10⁻⁴ A; energy ≈ 1.2×10⁻⁸ J

About This Question

This is Igcse Model Questions Vol1 2020 Physics Question 35. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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