State the superposition principle and outline the steps to compute an output parameter in a circuit with two independent sources.

State the superposition principle and outline the steps to compute an output parameter in a circuit with two independent sources.

• A. Turn off all sources, solve for the output, then sum.
• B. Turn off all but one independent source, solve for the contribution of that source, repeat for other sources, and sum the contributions; deactivate voltage sources by shorting them and deactivate current sources by opening them.
• C. Solve for the total response with all sources on and then separate contributions.
• D. Ignore sources with small amplitudes.

Answer: (B)

In a linear circuit, the response to multiple independent sources equals the sum of the responses from each source acting alone. This is the essence of superposition. To compute an output parameter with two independent sources, deactivate all independent sources except one: replace a voltage source with a short and a current source with an open, then solve for the output due to that single source. Repeat for the other independent source, and finally add the two contributions to obtain the total output. If dependent sources are present, keep them active during each partial calculation since they depend on circuit variables. This approach works for DC or AC analysis as long as the circuit remains linear and the initial energy in storage elements is handled consistently.

In a linear circuit, the response to multiple independent sources equals the sum of the responses from each source acting alone. This is the essence of superposition. To compute an output parameter with two independent sources, deactivate all independent sources except one: replace a voltage source with a short and a current source with an open, then solve for the output due to that single source. Repeat for the other independent source, and finally add the two contributions to obtain the total output. If dependent sources are present, keep them active during each partial calculation since they depend on circuit variables. This approach works for DC or AC analysis as long as the circuit remains linear and the initial energy in storage elements is handled consistently.