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Grouping Of Cells MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

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  • Series and Parallel Grouping of cell is considered one of the most asked concept.

  • 12 Questions around this concept.

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The figure shows three circuits I, II and III which are connected to a 3V battery.  If the powers dissipated by the configurations I, II and III are P1, P2 and P3 respectively, then :

 

Concepts Covered - 1

Series and Parallel Grouping of cell

 series grouping of cell:

In series grouping anode of one cell is connected to the cathode of other cells

n- identical cells which are connected in series, then

  • Equivalent e.m.f of combination is

  • Equivalent internal resistance r_{eq}=nr

  • Main current / current from each cell i=\frac{nE}{R+nr}

  • Power dissipated in the external circuit is

  • Conditions for Maximum Power is R=nr

  • P_{max}=n(\frac{E^{2}}{4r})  when nr<<R

 

 Parallel grouping of cell

 

In parallel grouping, all anodes are connected to one point and all cathode together at other points

 

For n cells connected in parallel

Equivalent e.m.f 

Equivalent internal resistance

The main current is

The potential difference across the external resistance

V=iR

Current from each cell

The power dissipated in the circuit

Condition for Maximum Power

R= \frac{r}{n}

P_{max}=n \left ( \frac{E^{2}}{4r} \right ) when r>>nR

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Series and Parallel Grouping of cell

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