Hi Sri,

Concentration cell

Galvanic cells made of two half-cells same as electrochemical cell but each of which containing the same electrodes and different concentrations

Note - Video is going out soon for concentration cell, stay tune to JEEpeJEETseries or NEETpeJEETseries - https://www.youtube.com/watch?v=TBH7tVDp9f8&list=PLCzaIJYXP5YcKvogTg6Nn0LdEQm7DRG9T&index=1 

Thanks for asking

Good day :)