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P4 General Studies: Simple Circuits (Paper 2 (intermediate))
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P4 General Studies: Simple Circuits (Paper 2 (intermediate))
Paper two compares series and parallel, with sums on current and voltage.
Direct answers Count the paths first, then decide whether it is series or parallel.
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: Simple Circuits |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationTwo bulbs are in parallel and one fails. What happens to the other?
- FoundationIn a series circuit, does it matter whether the switch is before or after the bulb?
- FoundationCan pencil lead, which is graphite, conduct electricity?
- IntermediateThree 1.5 V batteries in series gain one more battery. By what proportion does the voltage rise, in percentage points?
- IntermediateA total current of 0.6 A splits equally between 2 parallel bulbs. How much passes through each?
- IntermediateEighteen of 24 objects conduct. What proportion is that, in percentage points?
- ChallengeWhat happens if a wire joins the two battery terminals without a bulb?
- ChallengeThree parallel bulbs draw 0.9 A in total. What is the average current in each?
- ChallengeSix bulbs are in series and two fail. How many still light?
- Error redoError clinic: copper is an insulator, which is why wires are coated in it. True?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | It stays lit. | Each parallel branch has its own path, so one break does not affect the other. |
| 2 | No. | A series circuit has one path, so a break anywhere stops the current. |
| 3 | Yes, but the bulb glows dimly. | Graphite is a non-metal conductor with higher resistance than metals. |
| 4 | 33.3 percentage points. | It rises from 4.5 V to 6.0 V, an extra 1.5 V, which is 33.3 percentage points of the original. |
| 5 | 0.3 A. | 0.6 divided by 2 gives 0.3 A. |
| 6 | 75.0 percentage points. | Eighteen divided by 24 times 100 gives 75.0 percentage points. |
| 7 | A short circuit forms; the battery heats up fast and may be ruined. | A short circuit has almost no resistance, so the current is very large. Never try it. |
| 8 | 0.3 A. | 0.9 divided by 3 gives 0.3 A. |
| 9 | None. | One break in series switches everything off, so no bulb lights. |
| 10 | No. | Copper is the conducting core; the plastic sheath is the insulator that protects users. |
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 →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.