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Energy Transfers In Everyday Appliances (GCSE Physics)

The following is a GCSE Physics test covering 'Energy Transfers In Everyday Appliances' from the broader topic Electricity. 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

A household mains supply in the UK provides alternating electricity at which potential difference?
What happens to the resistance of most metal filament lamps as they get hotter when turned on?
Why do electric appliances fitted with a metal case often have an earth wire?
Why does putting insulation around a hot water cylinder reduce energy wasted?
A 2.0 kW kettle is switched on for 3 minutes. Which expression gives the electrical energy it uses (in joules)?
What is the equation that links power (P), potential difference (V) and current (I)?
Why are LED lamps often more energy efficient than incandescent filament bulbs?
Which of the following correctly gives the unit of electrical charge?
An appliance is rated 800 W. Which of these is the best way to reduce the electrical energy it uses?
A microwave oven operates at 1000 W for 2 minutes. How much energy (in kJ) does it supply?
Which equation expresses power loss in a transmission cable due to its resistance (R) and current (I)?