Neco 2023 Physics Question 47

Practice objective / multiple choice question 47 from the 2023 Neco Physics examination.

Neco 2023 Physics Objective / Multiple Choice Hard Difficulty

Question 47 NECO • 2023 • PHYSICS • objective

A long solenoid 0.50 m in length has 800 turns wound uniformly. Due to spacing, only 90\,% of the turns are effective. Its core is a cylindrical iron piece with relative permeability \(\mu_{r}=500\). A magnetic north pole of strength \(m=0.20\,\text{Wb}\) is placed at the centre of the solenoid and experiences a force of \(0.48\,\text{N}\) directed inward. Determine the current flowing through the solenoid.

Correct Answer A. 2.65 A

B. 1.75 A

C. 3.20 A

D. 2.10 A

Correct Answer

Correct Option:

2.65 A

This is Neco 2023 Physics Question 47. It is one of the objective questions from the 2023 Neco Physics examination.

Difficulty level: Hard .

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