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Question

Four cells of emf 1.5 V each are connected in parallel combination of cells. Then the output voltage of the parallel combination is

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
1.5 V

Parallel Cell Combination Output Voltage

When multiple cells with the same electromotive force (emf) are connected in parallel, the overall output voltage (or equivalent emf) remains the same as the emf of a single cell.

Given:

  • Emf of each cell, \(\mathcal{E} = 1.5\) V
  • Number of cells, \(n = 4\)
  • Connection type: Parallel

For a parallel combination of identical cells, the equivalent emf (\(\mathcal{E}_{\text{eq}}\)) is calculated as:

\(\mathcal{E}_{\text{eq}} = \mathcal{E}\)

Substituting the given value:

\(\mathcal{E}_{\text{eq}} = 1.5 \text{ V}\)

Therefore, the output voltage of the parallel combination is 1.5 V.

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