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Physics (P2)

Electricity and Circuits

QuestionAnswer
Symbol for resistor? Rectangle with line coming out each end
Symbol for variable resistor? Resistor symbol with diagonal arrow pointing up through middle
Symbol for diode? Circle with line going through including middle, play video symbol in middle
Symbol for thermistors Resistor symbol with flat line underneath and then diagonal up from that
Symbol for LED Diode symbol with 2 mini arrows pointing diagonally up from end of top corner of circle
Symbol for LDR Diode symbol but mini rectangle in middle instead and 2 mini arrows pointing down on top left corner of circle
Give 2 facts about a series circuit. Current same everywhere, closed circuit
Give 2 facts about a parallel circuit. Branched circuit, current splits into multiple paths
Describe where the voltmeter is attached and it's job in the parallel circuit Attached with a component and it measures the PD across it
Give the equation for the energy transferred which involves Volts E = Q x V
What is this quote in words? Energy (J) = Charged moved (colomb) x pd (v)
What does an ammeter measure in a series circuit? Measure the current in amp
What is an electric current as the rate of flow of charge and the current in metals? Flow of electrons
Give the equation relating charge to current and time Q = I x t
When will there be a current in a circuit? When it's closed and includes a source of PD
How does changing the resistance change the current? Greater resistance means harder it is for charge to flow through the component
What does a variable resistor do? Changes amount of resistance of component, changing amount of current that flows in circuit
Equation linking volts with resistance? V=IR
Why is the net resistance increased with 2 resisters in a series circuit? Total resistance is the sum of the resistance in each component
Why is the net resistance decreased with 2 resisters in a parallel circuit? Total resistance= 1/R1 + 1/R2 = 1/R
In a series circuit how do we work out resistance? V=IR or add the resistance
Created by: user-1956972
 

 



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