BMAT Question 【Physics】2

【Question】 

Two non-identical resistors are connected in a series circuit.
Which one of the following statements are true?

1　The current through both of the resistors is the same.
2　The voltage across both of the resistors is the same.
3　The voltage across the two resistors can be calculated using Ohm’s law.

A 1 and 2 only
B 1 and 3 only
C 1 only
D 2 only
E 3 only
F All of the above

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【Answer】
B is the answer

Components in a series circuit have the same current flowing through them.
Knowing this, you could calculate the potential difference across them using V=IR.

Statement 1 is correct as the current through two resistors in series is the same.

Statement 2 is incorrect the voltage across the resistors will be shared in a ratio dependent on the resistance of the resistors.

Statement 3 is correct as you can use the equation to calculate the potential difference across the two resistors in series.

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Series Circuit : 直列回路