In: Physics
1.Give an advantage and a disadvantage of a parallel
combination. Give an example.
2.Give a few essential features of an ordinary
cell.
3.How should two identical batteries be connected in
order to obtain the maximum EMF from the combination, should it be
in series or parallel? Why?
?
4.How does the resistance of a conductor affected by its length and
diameter?
1. Advantage: Consistent voltage can be applied across connected devices.
Disadvantage: Parallel circuit requires lots of wire to fabricate.
2.
3.
They should be in series to achive maximum emf. As the batteries are like an "pump" for electron, so two of those connected in series can "push" electrons with double "pressure".
4.
According the laws of resistivity,
so, , L is length and D is diameter.