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Electricity — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceElectricity5 Marks
Question
How will you infer with the help of an experiment that the same current flows through every part of the circuit containing three resistances in series connected to a battery?
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Answer

Perform an activity to show that in series combination of resistors, same current flows through each resistor.
  1. Connect three resistors of resistances R1 = 1Ω, R2 = 2Ω and R3 = 3Ω in series.
  2. Connect the series combination of resistors with a battery of 6V, a plug key K and an ammeter A as shown in figure.


  1. Note the reading of ammeter after plugging the key. Let it be I.
  2. Now disconnect ammeter and connect it in between the resistors R1 and R2 as shown in figure.

​​​​​​​
  1. Again plug the key and note the reading of ammeter. It is found that again it is I.
  2. Now disconnect the ammeter and connect it in between the resistors R2 and R3.
  3. Plug the key and note the reading of ammeter. Again it is found to be I.

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