Series and Parallel Circuits (Leaving Cert Physics): Flashcards
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12 cards from this deck
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Practise the cards
12 cards from this deck
Series circuit
Series circuit
Components connected end-to-end in a single path
Current in a series circuit
Current in a series circuit
Exactly the same at every point throughout the circuit
Junction in a circuit
Junction in a circuit
Point where several conductors meet
Kirchhoff's Current Law
Kirchhoff's Current Law
Currents in = currents out at any junction
Parallel circuit
Parallel circuit
Current has multiple paths to follow
Total current formula (parallel)
Total current formula (parallel)
(total = sum of branch currents)
Ammeter
Ammeter
Instrument used to measure electric current
How to connect an ammeter
How to connect an ammeter
In series with the circuit part where current is measured
Conservation of electric charge
Conservation of electric charge
Charge cannot be created or destroyed, only moved around
Why current is same everywhere in series
Why current is same everywhere in series
Charge is conserved - cannot appear or disappear
Current at a parallel junction
Current at a parallel junction
Splits between branches, then recombines to original total
Why currents in = currents out at junction
Why currents in = currents out at junction
Charge cannot accumulate at a junction
