Exam-style question
Try this first
How does the potential difference across a resistor relate to the current flowing through it according to Ohm's law?.
- A.It is directly proportional.
- B.It is inversely proportional.
- C.It is independent.
- D.It is exponentially related.
Model answer
What a good answer should say
- It is directly proportional.
Explanation
Why this works
Ohm's law states that the potential difference (V) across a conductor is directly proportional to the current (I) flowing through it, given by the formula V = I x R, where R is the resistance. This means that as current increases, potential difference also increases, assuming resistance remains constant.
Common mistake
No common mistake is linked to this question yet.