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Which Side of a Battery is Positive?

A cell or battery is drawn with a long line and a shorter line.
The long line is the positive side (plus is longer).
The short line is the negative side (minus is shorter).

Cell and a Lamp in an Electrical Circuit

What is Conventional Current?

All electrical circuits are drawn
as though electricity flows from positive to negative.
This is called conventional current.

In metals, we know that electricity is a flow of electrons
and electrons are negatively charged.
Electrons must therefore flow from negative to positive,
since they are they are repelled by the negative side
of the cell and attracted to the positive side. The flow of
electrons from negative to positive is called electron flow.

Why are electric circuits deliberately drawn using
conventional current, when we know that this is wrong?

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