Introduction:
The Superposition Theorem is a powerful technique used in electrical circuit analysis. It allows us to analyze complex circuits by breaking them down into simpler circuits. The theorem states that the response (current or voltage) in any branch of a linear, bilateral circuit with multiple sources can be determined by considering the effects of each source individually, while the other sources are turned off (replaced by their internal resistances).

Explanation:
The Superposition Theorem is applicable to both current and voltage. Let's understand why:

1. Current:
- The Superposition Theorem can be used to determine the current flowing through a specific branch of a circuit.
- By turning off all other sources and replacing them with their internal resistances, we can calculate the current produced by each source individually.
- The total current flowing through the branch is then obtained by summing up the individual currents.
- This allows us to analyze the contribution of each source to the total current and helps in understanding the behavior of the circuit.

2. Voltage:
- The Superposition Theorem can also be used to determine the voltage across a specific component in a circuit.
- By turning off all other sources and replacing them with their internal resistances, we can calculate the voltage produced by each source individually.
- The total voltage across the component is then obtained by summing up the individual voltages.
- This allows us to analyze the contribution of each source to the total voltage and helps in understanding the behavior of the circuit.

3. Power:
- Power is the product of voltage and current, so if we can determine the voltage and current using the Superposition Theorem, we can also determine the power.
- By calculating the power for each source individually and summing them up, we can determine the total power delivered or consumed by the circuit.

Conclusion:
The Superposition Theorem is a versatile technique that can be used to analyze circuits in terms of current, voltage, and power. By considering the effects of each source individually, we can gain insights into the behavior of complex circuits and make accurate predictions about their performance.