Solved: The internal resistance of a 1.35-V mercury cell

Chapter 19, Problem 75GP

(choose chapter or problem)

The internal resistance of a 1.35-V mercury cell is \(0.030 \Omega\), whereas that of a 1.5-V dry cell is \(0.35 \Omega\). Explain why three mercury cells can more effectively power a 2.5-W hearing aid that requires 4.0 V than can three dry cells.

Equation transcription:

Text transcription:

0.030 Omega

0.35 Omega

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