A) 4.5 V
B) 4 V
C) 0 V
D) 2 V
Correct Answer: A
Solution :
Current taken from the cell \[i=\frac{E}{R+r}\] Current in external resistance\[i=\frac{V}{R}\] \[\therefore \] \[\frac{V}{R}=\frac{E}{R+r}\] \[\frac{V}{4.5}=\frac{5}{4.5+0.5}\Rightarrow V=4.5\,\text{Volt}\]You need to login to perform this action.
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