PHYSICS 6 EXTENDED PHYSICS
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1 PHYSICS 6 EXTENDED PHYSICS GRADE 11 TERM 3 PORTFOLIO TASKS STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
2 Unit/Topic Performance Criteria Assess Event Date Time Electric charge Current Potential difference Portfolio Tasks WEEKS Resistors Term 3 Extended 3 to 9 Electric circuits Action and use of components Dangers of electricity Student Name Teacher Class Total Mark Marked and feedback provided by: Signature: Date: Teacher Comment: Feedback acknowledgement Student Comment: Student Signature: I certify that the work submitted is my own. I acknowledge that I have received and understood feedback about this assignment. Date: N.B. Choose how to divide up this booklet into 4 or 5 portfolio tasks to assess your students at suitable stages as the term progresses. For each portfolio task add the header (above) to every portfolio task you generate so that the students are aware of which performance criteria are being assessed. STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
3 Multiple Choice STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
4 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
5 7. What are the symbols used for the units of current and resistance? 8. Which circuit shows how a voltmeter is connected to measure the potential difference across the cell? 9. Two faulty ammeters and two perfect ammeters are connected in series in the circuit shown. The readings on the ammeters are A A A A A A A A Which two ammeters are faulty? A A 1 and A 2 B A 1 and A 4 C A 2 and A 3 D A 3 and A 4 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
6 10. A student connects two lamps in the circuit shown. Which switches must he close to light both lamps? A 1 and 2 B 1, 2 and 3 C 1 and 3 D 2 and The diagram shows a torch containing two 2 V cells, a switch and a lamp. What is the circuit diagram for the torch? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
7 12. Which diagram shows a circuit that will allow the lamps to be switched on and off independently? 13. The circuit shown contains four lamps and three switches Which switches must be closed to light only lamps 1 and 3? A switch 1 only B switch 1 and switch 2 only C switch 1 and switch 3 only D switch 2 and switch 3 only STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
8 14.When the potential difference (p.d.) across a piece of resistance wire is changed, the current through the wire also changes. The temperature of the wire is kept the same. Which graph shows how the p.d. and current are related? 15. Four lamps are labelled 60 W 240 V. In which circuit are the lamps connected so that they all work at normal brightness? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
9 16. Which electrical component would not normally be found in a battery- operated torch (flashlight)? 17. An electrical component is to be placed in the circuit at Z, to allow the brightness of the lamp to be varied from bright to dim. What should be connected at Z? 18. Which symbol represents an electrical component used to store energy? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
10 19. In which circuit does the voltmeter read the potential difference across the lamp? 20. In the circuit below, X and Y are identical 6 V lamps. What happens when the switch is closed? A X lights more brightly than Y. B Y lights more brightly than X. C X and Y light with equal brightness. D Neither X nor Y light. STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
11 21. The diagram shows a circuit with three ammeters, X, Y and Z. Which set of readings is possible? 22. Four lamps and four switches are connected to a power supply as shown in the circuit diagram. When all the switches are closed, all the lamps are lit. When one of the switches is then opened, only one lamp goes out. Which switch is opened? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
12 23. Four resistors and an ammeter are connected to a battery as shown. The ammeter reads 2 A. Which of the four labelled points in the circuit is the only one where the current is less than 2 A? 24. A lamp is to be connected in a circuit so that the p.d. across it can be varied from 0 to 6 V. Which circuit would be most suitable? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
13 25. Which circuit is a variable potential divider (potentiometer)? 26. The circuit contains a relay. When switch S is closed, what is the state of the lamps? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
14 27. A student makes the circuit shown. The fuse has blown and stopped the current. What could have caused this? A The current rating of the fuse was too high. B The current was too large. C The lamp was loose. D The voltage was too small. 28. Why is a fuse used in an electrical circuit in a house? A to increase the circuit resistance B to keep the power used to a minimum value C to prevent a short- circuit from occurring D to stop the cables from carrying too much current STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
15 29. An electric power tool is being used outdoors in a shower of rain. What is the greatest hazard to the user? A The cable gets hot and causes burns. B The circuit- breaker cuts off the current. C The current passes through water and causes a shock. D The tool rusts. 30. Which statement is correct? A B C D A fuse is included in a circuit to prevent the current becoming too high. A fuse should be connected to the neutral wire in a plug. An electric circuit will only work if it includes a fuse. An earth wire is needed to prevent the fuse blowing. 31. What is the symbol for a fuse? 32. A cable in a house is carrying too much current. What is the greatest danger? A B C D appliances not working electric shock fire low power STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
16 33. A student makes four circuits. In which circuit are both lamps protected by the fuse? STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
17 Theory Questions Theory question 1 Theory question 2 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
18 Theory question 3 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
19 Fig. 8.1 shows a high- voltage supply connected across two metal plates. (a) Explain what is meant by an electric field.... [2] (b) On Fig. 8.1, draw the electric field lines between the plates and indicate their direction by arrows. [2] (c) The metal plates are now joined by a high- resistance wire. A charge of C passes along the wire in 30 s. Calculate the reading on the ammeter. ammeter reading = [2] (d) The potential difference of the supply is re- set to 1500 V and the ammeter reading changes to A. Calculate the energy supplied in 10 s. Show your working. energy =. [3] STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
20 Theory question 4 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
21 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
22 Theory question 5 Fig. 8.1 shows a low- voltage lighting circuit. (a) On Fig. 8.1, indicate with a dot and the letter S, a point in the circuit where a switch could be placed that would turn off lamps Y and Z at the same time but would leave lamp X still lit. [1] (b) (i) In the space below, draw the circuit symbol for a component that would vary the brightness of lamp X. (ii) On Fig. 8.1, mark with a dot and the letter R where this component should be placed. [2] STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
23 (c) Calculate the current in lamp Y. current =...[2] (d) The current in lamp Z is 3.0 A. Calculate the resistance of this lamp. resistance =...[2] (e) The lamp Y is removed. (i) Why do lamps X and Z still work normally? (ii) The current in lamp X is 1.0 A. Calculate the current supplied by the battery with lamp Y removed. current =... [2] STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
24 Theory question 6 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
25 Theory question 7 Fig. 8.1 shows two electrical circuits. The batteries in circuit 1 and circuit 2 are identical. Fig. 8.1 (a) Put ticks in the table below to describe the connections of the two resistors P and Q. (b) The resistors P and Q are used as small electrical heaters. State two advantages of connecting them as shown in circuit 2. advantage 1... advantage 2... [2] (c) In circuit 1, the ammeter reads 1.2 A when the switch is closed. Calculate the reading of the voltmeter in this circuit. Voltmeter reading =... [2] (d) The two switches in circuit 2 are closed. Calculate the combined resistance of the two resistors in this circuit. combined resistance =... [2] STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
26 (e) When the switches are closed in circuit 2, ammeter 1 reads 5 A and ammeter 2 reads 2 A. Calculate (i) the current in resistor P, (ii) the power supplied to resistor Q, current =... [1] (iii) the energy transformed in resistor Q in 300 s. power =... [1] energy =... [1] [Total: 10] Theory question 8 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
27 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
28 Theory question 9 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
29 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
30 Theory question 10 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
31 STS\G11\Portfolio\Extended Physics Assessment Booklet\CDAU\ADVETIVersion
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