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Current, Resistance And Potential Difference (GCSE Physics)
The following is a GCSE Physics test covering 'Current, Resistance And Potential Difference' from the broader topic Electricity. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Two equal resistors are connected as a potential divider across a 12 V battery. What is the potential difference across one resistor?
Where should an ammeter be connected to measure current through a component?
Why does increasing the transmission voltage for power lines reduce energy losses in the cables?
Compared with an incandescent filament lamp, why are LEDs more energy efficient as light sources?
Which equation links electrical power (P), current (I) and potential difference (V)?
In a parallel circuit containing several branches, what is true about the potential difference (voltage)?
What happens to total resistance when resistors are added in series?
Which of these is the unit of potential difference (voltage)?
What is the SI unit of electric charge?
How does the resistance of an NTC thermistor change as its temperature increases?
A 10 O resistor has a current of 2.0 A through it. What is the electrical power dissipated by this resistor?
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