Red Seal Trades Exams Electricity — practice questions
22 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Red Seal Trades Exams Electricity in the app →An electrician measures how fast charge flows past a point. That quantity is electric:One coulomb of charge passing a point in one second defines one:Fuses, circuit breakers and many appliances are rated in units of:Conventional current is defined as the direction in which charge that is positive would:For current to flow, conducting wires must supply a path that is:In metals, the charges free to move and carry current are the:The average velocity of the free charges along a conductor is called the:Collisions of free electrons with the atoms of a conductor transfer to them:The physicist who first showed experimentally that current is proportional to voltage was:The property that impedes current, similar in spirit to friction, is:Ohm's law is described as not being:For most conductors, raising the temperature makes the resistance:The resistance of an object depends on its material and on its:At very low temperatures some materials reach zero resistivity, becoming:The flow of electric charge in only one direction is called:Household electricity in the United States is quoted as an rms voltage of:A 120 V AC supply has a peak voltage swinging to about:That AC voltage swings from peak to peak and back each second a number of times equal to:The two known hazards of electricity are shock and:A low-resistance path allowing a very large current between terminals is a:A metal strip with a low melting point that permanently breaks a circuit is a:An automatic but restorable switch that opens on excessive current is a circuit: