Question

In superposition theorem, when we consider the effect of one current source, all the other current sources are

• A. Opened
• B. Undisturbed
• C. Removed
• D. Shortened

Answer 1

Answer: (A)

Opened

Answer 2

The superposition theorem is used to analyze linear circuits with multiple independent sources. When applying the superposition theorem, we consider the effect of each independent source one at a time, while all other independent sources are turned off.

To "turn off" an independent source:

1. An ideal voltage source is replaced by a short circuit (its internal resistance is zero).
2. An ideal current source is replaced by an open circuit (its internal resistance is infinite).

Therefore, when considering the effect of one current source, all the other independent current sources are replaced by an open circuit, which means they are "opened".