Question
Mon May 21, 2012 By: Jigyasa Dwivedi
 

im confised as to when we connect the cathode to the +ve terminal of the battery and the anode to the -ve terminal ? and sometimes the trend is reversed.Why so ?

Expert Reply
Tue May 22, 2012
In a discharging battery or galvanic cell (diagram at right) the anode is the negative terminal since that is where the current flows into the device.
 
In a recharging battery, or an electrolytic cell, the anode is the positive terminal, which receives current from an external generator. 
Ask the Expert