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WAEC Physics 2020 Paper
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© africaexams.com
Question : 49
Total: 51
When two cells of negligible internal resistances and equal e.m.f. denoted by
E
1
and
E
2
are connected in parallel, combined e.m.f.
E
is given by
E
=
E
1
+
E
2
E
=
E
1
E
2
1
E
=
1
E
1
+
1
E
2
E
=
E
1
=
E
2
Validate
Solution:
If two cells of equal emfs are connected in parallel then the effective emf is equal to the emf of any one of the cells.
© africaexams.com
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