what is the total emf when 3 cellseach of voltages 1v,1.5v,2v are connected in a)series and b)paralell
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Answer:
Emf=2V
r=?
R=5Ω
terminal voltage=5V
Let internal resistance be r ohm
the effective resistance of each three cells in parallel, r=
3
r
total resistance =
3
r
+R
V=emf×
r
R
+R
terminal voltage V=emf×
(
3
r
)
R
+R
1.5=2×
(
3
r
)
5
+5
r=5Ω
Explanation:
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