Which component conducts electric current to the external circuit in a galvanic cell?

Which component conducts electric current to the external circuit in a galvanic cell?

• A. Electrodes
• B. Half cell
• C. Anode
• D. Electrolyte

Answer: (A)

Electric current to the external circuit is carried by electrons moving through the conducting path provided by the electrodes. In a galvanic cell, electrons flow out of the anode through the external wire, then back in through the cathode, so the electrode surfaces are the channels that connect the cell to the outside circuit. The electrolyte only allows ions to move inside the cell to balance charge; it does not transfer electrons to the external circuit. A half-cell is a single electrode in solution, not the external conducting path by itself. The anode is one electrode, but the broader conducting component that links the cell to the outside world is the electrode. Therefore, the conducting component is the electrode.

Electric current to the external circuit is carried by electrons moving through the conducting path provided by the electrodes. In a galvanic cell, electrons flow out of the anode through the external wire, then back in through the cathode, so the electrode surfaces are the channels that connect the cell to the outside circuit. The electrolyte only allows ions to move inside the cell to balance charge; it does not transfer electrons to the external circuit. A half-cell is a single electrode in solution, not the external conducting path by itself. The anode is one electrode, but the broader conducting component that links the cell to the outside world is the electrode. Therefore, the conducting component is the electrode.