Questions
An energy source will supply a constant current into the load if its internal resistance is
a
zero
b
non-zero but less than the resistance of the load
c
equal to the resistance of the load
d
very large as compared to the load resistance
detailed solution
Correct option is D
I=εr+RIf r>> R, thenI= εr = constantTalk to our academic expert!
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The lamp of flash light is 1 .5 . It uses 3 cells each of 1 . 5 V and internal resistance 0 . 25 . What is the net potential difference across the lamp ?
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