Question

If three resistors are connected in series. what will be the potential difference across a resistor?

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Answer 1

If the three resistors have same resistance, and potential difference across the whole circuit is V, then potential difference across one resistor is V/3. The current remains the same in all the resistors.

Answer 2

If three resistors are connected in series the P.D across the resistors are different. It is because as the flow of current is constant and differing resistors shows differing P.D

P.D ≈ I
P.D ≈ 1/R ≈ I

Adding of the P.D drop in three resistors gives the total P.D

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