A. is independent of the nature of the surface in contact
B. depends on the area of surface in contact
C. depends on the relative motion between the surface in contact
D. depends on the weight of the moving body

Correct Answer: Option C

C. depends on the relative motion between the surface in contact

SEE ALSO  A circuit is set up as shown in the diagram below. When the key is closed, the ammeter reading will be?

Copyright warnings! Do not copy.