Question

Consider the following two types of non-identical sources:

1. Voltage source e₁(t) and e₂(t)

2. Current source i₁(t) and i₂(t)

Regarding the mode of their connection in a circuit.
1. 1 cannot be connected in parallel, and 2 cannot be connected in series
2. 1 cannot be connected in series, and 2 cannot be connected in parallel
3. Both 1 and 2 cannot be connected in series
4. Both 1 and 2 cannot be connected in parallel

Answer 1

Correct Answer - Option 1 : 1 cannot be connected in parallel, and 2 cannot be connected in series

Concept:

• Nonidentical voltage sources cannot be connected in parallel because they disobey KVL. In a parallel connection, the voltage across all the branches must be the same.
• Nonidentical current sources cannot be connected in series because they disobey KCL. In a series connection, the current flows through all the elements must be the same.

Application:

1. Voltage sources e₁(t) & e₂(t) cannot be connected in parallel.

2. Current sources i₂(t) & i₂(t) cannot be connected in series.