Neco Model Questions Vol1 2021 Physics Question 14

Practice objective / multiple choice question 14 from the 2021 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2021 Physics Objective / Multiple Choice Hard Difficulty
Question 14 NECO_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A 12 V battery has an internal resistance of \(0.5\ \Omega\). It is connected to a network where a \(2\ \Omega\) resistor \(R_1\) is in series with a parallel combination of a \(6\ \Omega\) resistor \(R_2\) and a \(3\ \Omega\) resistor \(R_3\). (a) Determine the total current supplied by the battery and the potential difference across \(R_2\). (b) If \(R_3\) is removed, what is the new total current supplied by the battery?

Answer Options

Correct Answer A. Total current = 8/3 A (≈2.67 A); V_R2 = 16/3 V (≈5.33 V); New total current = 24/17 A (≈1.41 A)
B. Total current = 7/3 A (≈2.33 A); V_R2 = 14/3 V (≈4.67 V); New total current = 20/17 A (≈1.18 A)
C. Total current = 8/3 A (≈2.67 A); V_R2 = 15/3 V (≈5.00 V); New total current = 24/15 A (≈1.60 A)
D. Total current = 3 A (≈3.00 A); V_R2 = 5 V (≈5.00 V); New total current = 2 A (≈2.00 A)
Correct Answer
A
Correct Option:
Total current = 8/3 A (≈2.67 A); V_R2 = 16/3 V (≈5.33 V); New total current = 24/17 A (≈1.41 A)

About This Question

This is Neco Model Questions Vol1 2021 Physics Question 14. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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