Electricity 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: SunsetCreated on: 03-01-14 10:04 How is voltage calculated? Energy Transferred (work done) / Charge 1 of 15 How is electrical power calculated? Current x voltage 2 of 15 Voltage in parallel is The same everywhere 3 of 15 Current in series is The same everywhere 4 of 15 What is a flow of charged particles called? Current 5 of 15 What is the frequency of AC mains supply in the UK? 50Hz 6 of 15 Describe electrons in DC (direct current) Travel in one direction 7 of 15 What is resistance measured in? Ohms 8 of 15 Is a diode an ohmic or non-ohmic resistor? Non-ohmic 9 of 15 How is an LDR used in security lights? As it gets darker, the resistance of the LDR increases. This causes the lamp to switch on. 10 of 15 If a circuit has 2C and 4V over 4s, what is its power? 2W 11 of 15 What colour is the live wire? Brown 12 of 15 You have a choice of a 1A, 3A or 10A fuse to replace the old one in a 460W microwave. Which do you pick? 3A 13 of 15 Why are the pins in a plug made of brass? Brass is durable and doesn't corrode so the pin will always fit into the socket 14 of 15 Why should electricians wear rubber soled boots when working? So they aren't earthed, as rubber has a very high resistance so very little current can pass through you to the ground 15 of 15
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