How is an ammeter typically connected to a circuit?

An ammeter is designed to measure the current flowing through a circuit, and it is typically connected in series with that circuit. When placed in series, the ammeter allows all the current that flows through the circuit to pass through it. This direct connection is essential because the ammeter works by measuring the amount of current that flows through its internal resistance, which is designed to be very low to minimize its impact on the circuit’s operation.

Connecting an ammeter in parallel with a circuit would lead to a short circuit condition, as it would create a path of very low resistance. This could not only damage the ammeter but also potentially harm other components in the circuit due to excessive current. Connecting in quadrature or in phase is not relevant in this context, as these terms relate more to phase relationships in alternating current systems rather than how an ammeter should be connected for current measurement. Thus, the correct method is to connect the ammeter in series to accurately measure the circuit's current.