Neco 2022 Physics Question 34

Practice objective / multiple choice question 34 from the 2022 Neco Physics examination.

Neco 2022 Physics Objective / Multiple Choice Hard Difficulty

Question 34 NECO • 2022 • PHYSICS • objective

A single‑turn rectangular coil of area \(0.02\ \text{m}^{2}\) rotates uniformly in a uniform magnetic field of magnitude \(B=0.5\ \text{T}\). The coil's resistance is negligible and it is connected to an external resistor \(R_{\text{load}}\). The coil rotates at \(120\) revolutions per second. The internal resistance of the coil is \(0.2\ \Omega\). Determine the value of \(R_{\text{load}}\) (in \(\Omega\)) that maximises the average power delivered to the resistor, and compute that maximum average power (in watts).

A. 0.10 Ω; 28.4 W

B. 0.30 Ω; 42.6 W

C. 0.25 Ω; 38.0 W

Correct Answer D. 0.20 Ω; 35.5 W

Correct Answer

Correct Option:

0.20 Ω; 35.5 W

This is Neco 2022 Physics Question 34. It is one of the objective questions from the 2022 Neco Physics examination.

Difficulty level: Hard .

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