What is the correct way to connect ammeters when measuring current in a circuit?

To measure current in a circuit accurately, ammeters must be connected in series with the circuit components. When connected in series, all the current flowing through the circuit also flows through the ammeter, allowing it to provide a direct measurement of the current. This configuration is essential because an ammeter has very low internal resistance, which prevents it from significantly altering the current in the circuit.

If you were to connect an ammeter in parallel with a load, the ammeter would create a short circuit, potentially leading to equipment damage or inaccurate readings. Connecting it to the ground does not facilitate proper current measurement since it does not include the current flowing through the load or the circuit. Also, connecting it across the load would not capture the total current passing through the circuit, as it would bypass the current through the load itself. Therefore, the series connection is the only method that allows for a valid and safe measurement of current in a circuit.