Where can the ammeter be placed in a series circuit?

Where can the ammeter be placed in a series circuit?

• A. Anywhere
• B. Only before the load
• C. Only after the load
• D. In parallel with the power source

Answer: (A)

In a series circuit, the current is the same through every component, so the ammeter must be placed in the path of that current (in series). It can be positioned anywhere along that single current path—before the load, after the load, or anywhere along the wire—without changing the current, since the series path forces the same current through all components. The ammeter should have very low internal resistance to avoid affecting the circuit. Placing it in parallel with the load would create an alternate path for current and give a misleading reading or disturb the circuit.

In a series circuit, the current is the same through every component, so the ammeter must be placed in the path of that current (in series). It can be positioned anywhere along that single current path—before the load, after the load, or anywhere along the wire—without changing the current, since the series path forces the same current through all components. The ammeter should have very low internal resistance to avoid affecting the circuit. Placing it in parallel with the load would create an alternate path for current and give a misleading reading or disturb the circuit.