In which of the following two ways can resistances be combined?

Correct option is C

The correct answer is (c) Series and parallel.
· Resistances can be combined in two primary ways: series and parallel.
· In a series combination, resistors are connected end-to-end, and the total resistance is the sum of the individual resistances.
· In a parallel combination, resistors are connected across the same two points, and the total resistance is calculated differently, resulting in a lower equivalent resistance than any of the individual resistances.
Information Booster:
· Series Combination: The resistors are connected in a single path, and the total resistance is the sum of individual resistances (Rtotal=R1+R2+...+Rn).
· Parallel Combination: The resistors are connected across the same two points, and the reciprocal of the total resistance is the sum of the reciprocals of individual resistances (+…….).
· Series connections result in higher resistance, while parallel connections result in lower overall resistance.
· Knowing how to combine resistances is essential for analyzing and designing electrical circuits.