How can resistors be connected? Explain.

(N/A) Resistors can be connected in three primary configurations:
$(1)$ Series Connection: In this arrangement,resistors are connected end-to-end such that the same current flows through each resistor. The equivalent resistance is the sum of individual resistances: $R_{eq} = R_1 + R_2 + R_3 + ... + R_n$.
$(2)$ Parallel Connection: In this arrangement,the terminals of the resistors are connected to the same two nodes,meaning the potential difference across each resistor is the same. The reciprocal of the equivalent resistance is the sum of the reciprocals of individual resistances: $1/R_{eq} = 1/R_1 + 1/R_2 + 1/R_3 + ... + 1/R_n$.
$(3)$ Mixed Connection: This is a combination of both series and parallel circuits,where some resistors are connected in series while others are connected in parallel within the same network.