Which one of the following is the CORRECT statement for superposition theorem ?

The algebraic sum of all the voltages around any closed path is zero.

The overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.

The sum of currents entering a node is equal to the sum of currents leaving the node.

The algebraic sum of all the voltages around any closed path is equal to one.

Answer: The overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.

Explanation:

Superposition theorem State that the overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.

Determine the value of current (in A) that flows through a resistor of 9 ohms, when the potential difference between the ends of the resistor is 36 V ?