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P4 General Studies: Closed Circuits, Conductors and Insulators (Paper 2: intermediate)
Tutor Prep Guide · parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety
P4 General Studies: Closed Circuits, Conductors and Insulators (Paper 2: intermediate)
Paper two focuses on series against parallel, with conductor tests and percentage conversions.
Direct answers Remember one line: series adds voltage, parallel keeps branches independent.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: P4 General Studies: Closed Circuits, Conductors and Insulators |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhen a tester circuit lights up for a material, what does that show?
- FoundationFive of eight materials are conductors. What percentage is that?
- FoundationWhy should you never touch a switch with wet hands?
- IntermediateThree bulbs are in series and one fails. How many still light?
- IntermediateThree bulbs are in parallel and one fails. How many still light?
- IntermediateTwo 1.5 V cells are joined in parallel. What is the voltage and what is the benefit?
- ChallengeFour 1.5 V cells in series give what voltage?
- ChallengeFive bulbs are in parallel and two fail. How many still light?
- ChallengeNine of twelve materials are conductors. What percentage is that?
- Error redoIs it true that breaking one branch of a parallel circuit puts every bulb out?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | The material is a conductor and lets current through. | A lit bulb means the loop is complete through that material; a dark bulb means it is an insulator. |
| 2 | 62.5 percent. | 5 divided by 8, times 100, gives 62.5. |
| 3 | Because the body and water both conduct, and wet skin lets current pass more easily. | Tap water carries impurities, so it conducts far better than distilled water. |
| 4 | None, the series loop is broken so all go out. | There is only one path, so one gap cuts everything. |
| 5 | 2, each of the others still has its own path. | Each parallel branch stands on its own, so one failure leaves the rest working. |
| 6 | Still 1.5 V, but the cells last about twice as long. | Parallel wiring keeps the voltage and adds the amount of charge available. |
| 7 | 6.0 V. | 1.5 times 4 gives 6.0 V. |
| 8 | 3 still light. | 5 minus 2 gives 3; the failed branches do not affect the rest. |
| 9 | 75 percent. | 9 divided by 12, times 100, gives 75. |
| 10 | No, the other branches keep working. | Only a series circuit fails completely when one part breaks. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Then try paper three, using voltage and current to work out power and resistance.Tutor Registration →
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