4.3.1. Circuit diagrams and circuit components
A subsection of Physics, 0625, through 4. Electricity and magnetism
Listing 10 of 54 questions
A car headlamp circuit consists of a 12 V battery, a switch, two 12 V headlamps and a 12 V indicator lamp (inside the car). shows the symbols of these components. left headlamp right headlamp indicator lamp (inside car) switch 12 V battery Complete to show the wiring necessary so that all three lamps light up at full brightness when the switch is closed. Explain briefly, in terms of molecules, why solids expand when heated. Brass expands when heated. Invar is a metal that expands very little when heated. The flasher lamp shown in is used as a warning lamp in a car. brass strip lamp filament contact invar strip The flasher lamp is designed to flash on and off repeatedly. It contains a bimetallic strip made of a brass strip and an invar strip joined together along their lengths. 1. State what happens to the bimetallic strip when it is heated. 2. Explain why the lamp flashes on and off repeatedly when it is connected to an appropriate battery.
0625_s11_qp_21
THEORY
2011
Paper 2, Variant 1
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shows a digital logic circuit, not using the recognised symbols. AND gate OR gate D output E input A input B input C Complete the table below to indicate the logic levels of points D and E in the circuit, when points A, B and C are at the logic levels indicated. 0 represents low or off. 1 represents high or on. A B C D E Draw the recognised symbol for an AND gate. A NAND gate can be replaced by an AND gate and a NOT gate. Draw a diagram to show how the AND gate and the NOT gate should be connected. Label clearly the logic gates and any input or output.
0625_s14_qp_32
THEORY
2014
Paper 3, Variant 2
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Questions Discovered
54