4.2.2 Series and Parallel Circuits Flashcards

1
Q

What are the two ways of doing electrical components in a circuit?

A

in series and parallel

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2
Q

For components connected in series:

A
  • there is the same current through each component
  • the total potential difference of the power supply is shared between the components
  • the total resistance of the two components is the sum of the resistance of each component
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3
Q

For components connected in parallel:

A
  • the potential difference across each component is the same
  • the total current through the whole circuit is the sum of the currents through the separate branches
  • the total resistance of two resistors is less than the resistance of the smallest individual resistor
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4
Q

How does adding a resistor in series affect the circuit’s current?

A

Adding another resistor in series will increase the total resistance of the circuit and the decrease the total current of the circuit

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5
Q

How does adding a resistor in parallel affect the circuit’s resistance and current?

A

Adding another resistor in parallel will decrease the total resistance in the circuit and increase the total current in the circuit

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6
Q

What is the difference in effect of adding resistors in parallel circuits compared to adding resistors in series circuits?

A
  • adding resistors in series circuits increases the total resistance
  • adding resistors in parallel decreases the total resistance as current has additional pathways it can go through making it easier for current to flow through the circuit increasing the current
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7
Q

How does adding a resistor in parallel (additional pathway) in a circuit affect its current?

A
  • provides charge with more pathways
  • so overall current is greater for same p.d. when resistors are added
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