Why an ammeter is connected in series? Explain.
In the series connection, the current is the same across each branch. So, to measure the accurate value of current across a branch of the circuit we add an ammeter in the series of the branch.
Moreover, the ammeter has a low resistance so when it is connected in parallel it will draw a large amount of current and because we do not want to change the current that is flowing through the circuit, therefore, we connect an ammeter in series.