What unit is used to measure electric current?, Volt, Ohm, Watt, Ampere, What unit is used to measure resistance?, Watt, Ohm, Ampere, Volt, What unit is used to measure potential difference (voltage)?, Volt, Ohm, Ampere, Coulomb, What term describes a closed loop that allows electric current to flow from a source, through components, and back again?, Conductor, Electric Current, Electric Circuit, Resistance, What is the flow of electric charge (electrons) through a conductor called?, Electric Current, Voltage, Resistance, Circuit, In conventional current, current is said to flow from which terminal to which terminal?, North to south, Positive to negative, Negative to positive, It doesn't flow in a fixed direction, Which type of current periodically reverses direction?, Static current, Direct Current (DC), Alternating Current (AC), Conventional current, Which type of current flows steadily in only one direction?, Conventional current, Alternating Current (AC), Reverse current, Direct Current (DC), What do we call the resistance that exists inside a power source itself, such as a battery?, Circuit resistance, External resistance, Conventional resistance, Internal resistance, A flashlight stops working the moment one connecting wire is disconnected. What best explains this?, The loop is broken, so current can't flow, The battery ran out, The current switched to AC, The bulb lost resistance, A battery labeled "1.5V" only delivers about 1.3V to a device. What explains this drop?, Conventional current, Alternating current, Internal resistance, Circuit breaking, Why are home circuit breakers rated in Amperes, not Volts?, Volts only apply to AC, They protect against too much current, Amperes are easier to measure, Voltage at home never changes, A toaster's wire gets very hot when current passes through it. Which property causes this?, Internal resistance — it only affects batteries, Current — it cools the wire down, Voltage — it stores electrical energy, Resistance — it converts electrical energy into heat as current passes through, Why doesWhy does a phone charger convert electricity before it reaches your phone's battery? a phone charger need to convert the electricity from a wall outlet before it reaches your phone's battery?, To turn DC into AC, To raise the voltage to unsafe levels, To turn AC into DC, which the battery needs, Outlets carry no current, Voltage is like water pressure pushing water through a pipe. What would resistance represent?, A wider pipe, Something narrowing the pipe, slowing the flow, The pump creating pressure, The pipe's length only

Electical Circuit & Current

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