Neco 2021 Physics Question 32

Practice objective / multiple choice question 32 from the 2021 Neco Physics examination.

Neco 2021 Physics Objective / Multiple Choice Hard Difficulty

Question 32 NECO • 2021 • PHYSICS • objective

A rectangular coil of \(40\) turns has each side \(0.15\ \text{m}\) long and is placed in a uniform magnetic field of \(0.30\ \text{T}\) directed into the page. The coil is initially at rest. It is accelerated uniformly from rest to an angular speed of \(12\ \text{rad\,s^{-1}}\) in \(4\ \text{s}\) and then continues to rotate at this constant speed for a further \(6\ \text{s}\). (a) What is the maximum instantaneous emf induced in the coil during the whole motion? (b) What is the average magnitude of the induced emf over the total \(10\ \text{s}\) interval? Give your answers in volts, correct to two decimal places.

A. a) 2.70 V; b) 1.35 V

B. a) 4.00 V; b) 1.80 V

Correct Answer C. a) 3.24 V; b) 1.65 V

D. a) 3.00 V; b) 1.50 V

Correct Answer

Correct Option:

a) 3.24 V; b) 1.65 V

This is Neco 2021 Physics Question 32. It is one of the objective questions from the 2021 Neco Physics examination.

Difficulty level: Hard .

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