Answer : The correct option is, (A) cathode to the anode; anode to the cathode.
Explanation :
Electrochemical cell : It is defined as a device used to convert the chemical energy produced in a redox reaction into electrical energy. That means the redox reaction taking place.
The electrode on which the oxidation takes place is called the anode (or negative pole) and the electrode on which the reduction takes place is called the cathode (or positive pole). This cell is setup by using the salt bridge.
In the external circuit, the electrons flow from the anode (negative pole) to cathode (positive pole) through the voltmeter. In the inner circuit, the ions flow through the salt bridge. That means the anion move from the cathode to the anode and the cations move from the anode to the cathode.
When the oxidation will be stop then the electrons would not be flow from anode (negative pole) to cathode (positive pole) through the voltmeter.
Hence, the correct option is, (A) cathode to the anode; anode to the cathode.
