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Tutor HuntTest QuestionsPhysics QuestionsYear 10 Physics Questions

 

Power (GCSE Physics)

The following is a GCSE Physics test covering 'Power' from the broader topic Energy. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which expression gives energy (E) in terms of power (P) and time (t)?
Which of the following correctly converts 1.2 kW into watts?
Why is efficiency always less than or equal to 1 (or 100%) for real electrical devices?
A heater draws 2.0 A from a 12 V supply. What is its power?
A student measures voltage and current of a resistor as 6.00 V and 0.150 A. Using P = VI, what power should they report with correct significant figures?
Why do power companies transmit electricity at high voltage over long distances?
Which equation gives electrical power in terms of voltage (V) and current (I)?
A factory motor requires 50 kW. The supply voltage is 400 V. What current must the supply provide (ignoring losses)?
Which formula is equivalent to P = V × I using Ohm’s law (V = I × R)?
A 60 W lamp is connected to a 120 V supply. What is the current through the lamp?
A solar panel has an efficiency of 20% and receives 1000 W of solar power. What is the useful electrical power output?