kindly answer all the questions listed below.....thanks..

1 what is the significant of voltage and current dividers principle

2 discuss the difference between these two principles....

3 three resistors 2.5 ohms 4 ohms and 6 ohms are connected in
parallel...determine the actual current flowing through 4 and 6 ohms
if the current through 2.5 ohms is 7 ampere....

i will be waiting to your response....thanksssss!