What does negligible resistance mean?

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ellieee
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Homework Statement
nil
Relevant Equations
P=IV
Printed worksheet question 6: battery with e.m.f. 4.0V and negligible resistance, parts a and b on current 0.20A, with a solutions section stating 6a. work done = 6J.

why is answer for (6a)6J?
 
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ellieee said:
Homework Statement:: nil
Relevant Equations:: P=IV

View attachment 286996
why is answer for (6a)6J?
Negligible resistance means that the battery is a perfect source of DC voltage. The voltage at it's terminals is constant regardless of the current drawn.

The answer is not 6J.
 
DaveE said:
Negligible resistance means that the battery is a perfect source of DC voltage. The voltage at it's terminals is constant regardless of the current drawn.

The answer is not 6J.
then is the answer 4J?
 

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