combination of resistors

Consider the combination of resistor The equivalent resistance between a and b is

Discuss series and parallel combinations of resistors with their salient features.

Consider the combination of resistor, The equivalent resistance between a and b is

Consider the combination of resistor, The equivalent resistance between a and b is

In the following circits, heat produced in the resistor or combinations of resistors is conencted to a 12 V battery will be

A cell and two resistors R_1 and R_2 are provided to you.Draw different combinations of resistors using R_1 , R_2 , and the cell.