Igcse Model Questions Vol1 2017 Physics Question 31

Practice objective / multiple choice question 31 from the 2017 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2017 Physics Objective / Multiple Choice Hard Difficulty
Question 31 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • objective

A solenoid 0.50 m long has a cross‑sectional area of \(2.0\times10^{-3}\) m\(^2\) and \(800\) turns. Its current is increased uniformly from \(3\) A to \(5\) A in \(0.40\) s.\n(a) Calculate the induced emf in the solenoid during this change.\n(b) If the induced emf drives a current through a \(5\) Ω resistor connected across the solenoid, find the total energy dissipated in the resistor.\n(c) If the same current change occurs in \(0.10\) s instead, what is the ratio of the energy dissipated to that found in part (b)?

Answer Options

Correct Answer A. Induced emf = 0.016 V; energy dissipated = 2.1×10⁻⁵ J; ratio of energies = 4
B. Induced emf = 0.012 V; energy dissipated = 1.6×10⁻⁵ J; ratio of energies = 3
C. Induced emf = 0.014 V; energy dissipated = 2.0×10⁻⁵ J; ratio of energies = 2
D. Induced emf = 0.020 V; energy dissipated = 2.5×10⁻⁵ J; ratio of energies = 5
Correct Answer
A
Correct Option:
Induced emf = 0.016 V; energy dissipated = 2.1×10⁻⁵ J; ratio of energies = 4

About This Question

This is Igcse Model Questions Vol1 2017 Physics Question 31. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Hard .

View More Igcse Model Questions Vol1 2017 Physics Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support