phyics-coming up test-electricity-topics 3,7,11 0.0 / 5 ? PhysicsElectricityNational 5SQA Created by: VinaykumarCreated on: 15-10-16 11:20 What types of charge are there Positive, neutral and negative 1 of 35 Would positive and positive charges repel They repel. Opposable charges attract. 2 of 35 What is an atom made of Neutral and positive 3 of 35 What surrounds an atom Negative charge 4 of 35 The difference between conductor and insulator Conductor allows electrons to move freely. Vice versa 5 of 35 What is current measured in Amperes (A) 6 of 35 What is the symbol of current I 7 of 35 Symbol for charge Q 8 of 35 Relationship between current,charge and time Q=IT 9 of 35 What is the current in a series circuit Same at every point 10 of 35 What is the current in a parallel circuit Splits up between branches 11 of 35 What is a current The flow of electrons around a circuit 12 of 35 what does the fuse do in a plug protects the flex 13 of 35 what does the term "watts" mean in electricity the amount of electrical energy converted every second 14 of 35 what is the relationship between power,energy and time Power= energy/ time 15 of 35 power......... a circuit power through a circuit 16 of 35 voltage............ across a ciruit voltage across a circuit 17 of 35 relationship between voltage,power,current P=IV 18 of 35 voltage from mains 230V 19 of 35 if power rating greater than 700 watts, what fuse should be used 13A fuse 20 of 35 if power rating less than 700, what fuse should be used 3A fuse 21 of 35 what formula should be used to find the fuse P=IV 22 of 35 what is the purpose of an earth wire its a safety device 23 of 35 if an appliance is plastic does it need an earth wire no, as this means its double insulated 24 of 35 what does AC stand for alternating current 25 of 35 what does DC stand for direct current 26 of 35 can energy be destroyed no, only converted to different forms 27 of 35 what does a car convert energy from and to while acclerating chemical to kinetict and heat 28 of 35 what energy is most commonly lost to the surrounding heat energy 29 of 35 what is the gravitational pull of eath 9.8 N/ Kg 30 of 35 what does Ep=mgh mean potential energy= mass*gravitational pull*height(M) 31 of 35 what does Ek stand for kinetic engery 32 of 35 translate Ek=0.5*m*v squared kinetic engery= 0.5* mass(Kg)* speed squared 33 of 35 if we ignore air resistance does Ep=Ek yes they are 34 of 35 how to we find the efficiency of an electrical device(formula) (useful energy output/total energy output)* 100 35 of 35
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