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Current/Resistance

QuestionAnswer
What is a series circuit? Where two bulbs are connected one after another
What is a parallel circuit? The current coming from the battery splits up and some goes through each bulb.
When a bulb blows in a series circuit the circuit ____ is broken
When a bulb blows in a parallel circuit the circuit ____ is complete
What is the symbol for current? I
What is current measured with? Ammetre
What is needed for current to flow? Complete circuit
What is the unit for voltage? Volt
What is the symbol for voltage? V
Calculate the resistance of the filament of a car headlamp when 12 V produces a current of 5 2.4
Why can you not use a piece of wood in a circuit as opposed to a piece of metal? It is an insulator
Resistance is measured by what value? Ohms
Explain V=IR Voltage is equal to Current multiplied by resistance
Explain the graph for V/I Directionally proportional through the origin
Explain the graph for I/V Indirectly proportional
When a switch is closed in a circuit, what is observed? Current flows
Name the instrument used to measure voltage voltmetre
State Ohm’s law I = V/R
Name an essential component of a circuit Battery
What is the unit of current? Amp
Created by: ktmcmx