Question

Internal resistance of a cell is affected by the surface area of electrodes. As surface area increases, internal resistance:

विकल्प

• Remains unchanged

• Becomes infinite

• Increases

• Decreases

Answer 1

Internal resistance is inversely proportional to electrode surface area. A larger surface area provides more sites for chemical reactions and ionic interactions, allowing easier passage of current and reducing internal resistance. This is why larger cells typically have lower internal resistance.