A car battery with a 12 V emf and an internal resistance of 0.04 Omega is being charged with a current of 50 A.(i)The potential difference V across the terminals of the battery is A. 10 V B. 14 V C. 16 V D. 12 V

reiselivloy

reiselivloy

Answered question

2023-02-02

A car battery with a 12 V emf and an internal resistance of 0.04 Ω is being charged with a current of 50 A.(i)The potential difference V across the terminals of the battery is
A. 10 V
B. 14 V
C. 16 V
D. 12 V

Answer & Explanation

Gressviky6i

Gressviky6i

Beginner2023-02-03Added 9 answers

Given, EMF of the battery , E = 12 V
Internal resistance, r = 0.04 Ω
The battery in question is receiving current charge, i = 50 A
During charging, V>E
V = E + i r
= 12 + ( 50 × 0.04 )
= 12 + 2
V = 14 V
Therefore, (B) is the correct answer.

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