Question detail
A learner confuses potential difference, current and resistance. Which option best fixes the answer for Mains electricity?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Domestic uses and safety
Question
- A. State the exact relationship in the objective and apply it only to the stated situation.
- B. Replace the objective with a vague statement that electricity is useful.
- C. Describe a different Physics unit because it sounds more familiar.
- D. Leave out units, component names or circuit conditions from the answer.
Answer
The correct answer is: State the exact relationship in the objective and apply it only to the stated situation.
Explanation
State the exact relationship in the objective and apply it only to the stated situation. That keeps the answer focused on state that the potential difference between the live wire and earth is about 230 V.
Common mistake
Mains electricity common mistake 1
Giving a vague answer instead of directly addressing: State that the potential difference between the live wire and earth is about 230 V..
Answer by clearly explaining how to state that the potential difference between the live wire and earth is about 230 V..
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