If six identical cells each having an $e.m.f.$ of $6\,V$ are connected in parallel, the $e.m.f.$ of the combination is ................ $V$
A$1$
B$36$
C$\frac{1}{6}$
D$6$
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D$6$
d (d) In parallel combination ${E_{eq}} = E = 6\,V$
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