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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

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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.

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