P5 revision 3.0 / 5 based on 6 ratings ? SciencePhysicsGCSEAll boards Created by: LizzyCreated on: 24-06-11 10:10 Complete the sentence: The bigger the resistance the smaller the current 1 of 9 Why do resistors get hot? the energy from the moving electrons colliding with the stationary wire atoms 2 of 9 What is an LDR commonly used for? Switching outdoor lights on at night and off in the morning 3 of 9 What is potential difference A word used to describe the 'push' of the electrons in a circuit 4 of 9 If I add an extra battery to a circuit in parallel what will happen to the voltmeter and ammeter readings? Stay the same 5 of 9 Why does the National Grid use transformers? To minimize the amount of energy lost when it distributes the electricity 6 of 9 What is the power of an appliance? The rate at which energy is tranferred to it 7 of 9 What do home electricity meters measure energy transfer in? kmWh 8 of 9 What is efficiency measured in? % 9 of 9
Comments
Report