Question

Migration of colloidal particles under the effect of ___ field is called electrophoresis.

• A. electric
• B. magnetic
• C. both
• D. none

Answer 1

The correct option is A electric

Migration of colloidal particles under the effect of electric field is called electrophoresis.
Both the colloidal particles and the dispersion medium carry electrical charge. Under an influence of electric field, they move in opposite direction.
When the experimental conditions are arranged in such a way that only colloidal particles migrate but not the medium, the phenomenon is called electrophoresis.