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8 of 8 objectives have lessons · 0 studied · 0 secure
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Define resistance.
Taught in: Resistance and V = IR · 3 questions
Recall and use V = IR.
Taught in: Resistance and V = IR · 5 questions
Sketch the I–V characteristics of a metallic conductor at constant temperature, a semiconductor diode and a filament lamp.
Taught in: Ohm's law and I-V characteristics · 7 questions
Explain that a filament lamp’s resistance rises as the current increases, because its temperature rises.
Taught in: Why a filament lamp's resistance rises · 6 questions
State Ohm’s law.
Taught in: Ohm's law and I-V characteristics · 4 questions
Recall and use R = ρL / A.
Taught in: Resistivity and R = ρL/A · 7 questions
Understand that the resistance of a light-dependent resistor (LDR) falls as the light intensity rises.
Taught in: Thermistors and light-dependent resistors · 3 questions
Understand that the resistance of a thermistor falls as the temperature rises.
Thermistors are assumed to have a negative temperature coefficient.
Taught in: Thermistors and light-dependent resistors · 6 questions