Neco 2025 Physics Question 31

Practice objective / multiple choice question 31 from the 2025 Neco Physics examination.

Neco 2025 Physics Objective / Multiple Choice Hard Difficulty

Question 31 NECO • 2025 • PHYSICS • objective

A battery of unknown emf \(E\) and internal resistance \(r\) is connected to a load resistor. When a 2 Ω resistor is used as the load, the terminal voltage across the load is 8 V and the power delivered to the load is 32 W. When a 6 Ω resistor is used as the load, the terminal voltage is 12 V and the power delivered is 24 W. Determine the emf \(E\) of the battery and its internal resistance \(r\).

A. E = 18 V, r = 1 Ω

B. E = 14 V, r = 3 Ω

Correct Answer C. E = 16 V, r = 2 Ω

D. E = 20 V, r = 4 Ω

Correct Answer

Correct Option:

E = 16 V, r = 2 Ω

This is Neco 2025 Physics Question 31. It is one of the objective questions from the 2025 Neco Physics examination.

Difficulty level: Hard .

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