In Superposition theorem, while considering a source, all other voltage sources area.removed from the circuitb.open circuitedc.short circuitedd.change its position

In the Superposition theorem, while considering a source, all other voltage sources are short circuited. So, the correct answer is c. short circuited.

Here's the step by step explanation:

1. Identify the number of voltage or current sources in the circuit.

2. Choose one source to be active, and short circuit all other voltage sources (replace them with a wire).

3. Analyze the circuit and calculate the current or voltage values of interest.

4. Repeat steps 2 and 3 for each of the other sources, one at a time.

5. The total current or voltage at any point in the circuit is the algebraic sum of the values obtained in step 3 for each source.

This is the principle of superposition. It allows us to analyze complex circuits by considering one source at a time, and then adding up the results.