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A-LEVEL PHY 3.5: Electricity > A-LEVEL Physics: 5.3.2: Series & Parallel Circuits (SaveMyExams) > Flashcards

A-LEVEL Physics: 5.3.2: Series & Parallel Circuits (SaveMyExams) Flashcards

1
Q

In a Series Circuit, the Current is the ___ for All Components.

A

Same.

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2
Q

In a ___ Circuit, the Current is the Same for All Components.

A

Series.

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3
Q

When Components are Connected in Series, they have the Same…

A

Current.

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4
Q

In a Parallel Circuit, What happens to the Current?

A

In a Parallel Circuit, the Current is Split Across the Branches.
Total Current Into a Junction Must Equal Total Current Out of a Junction.

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5
Q

In Parallel Circuits, the Current ___ ___ at the Branches.

A

Splits Up.

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6
Q

In Parallel Circuits, the Current Splits Up at Branches. What Determines how Much Current Flows Through Each Branch?

A

The Amount of Current in Each Branch Depends on the Total Resistance of the Components Within that Branch.

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7
Q

The Amount of Current in Each Branch of a Parallel Circuit Depends on…

A

The Total Resistance of the Components Within that Branch.

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8
Q

How is the EMF of the Power Supply shared amongst the Components in a Series Circuit?

A

In a Series Circuit, Each Component gets a Share of EMF Depending on their Resistance.

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9
Q

How is the EMF of the Power Supply shared amongst the Components in a Parallel Circuit?

A

In a Parallel Circuit, the Total Voltage of All the Components in Each Branch = EMF.

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10
Q

Cells Can be Connected in…

A

Series or Parallel.

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11
Q

The Total Voltage of Combined Cells Can be Calculated in the Same Way as Voltage: (2)

A

-If the Cells are Connected in Series, Vtotal = V1 + V2 …

-If the Cells are Connected in Parallel, Vtotal = Voltage of 1 Cell.

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12
Q

Vtotal in Series = …

A

Vtotal = V1 + V2 + V3 …

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13
Q

Vtotal in Parallel = …

A

Vtotal = V1 = V2 = V3 …

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14
Q

Itotal in Series = …

A

Itotal = I1 = I2 = I3 …

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15
Q

Itotal in Parallel = …

A

Itotal = I1 + I2 + I3 …

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16
Q

Rtotal in Series = …

A

Rtotal = R1 + R2 + R3 …

17
Q

Rtotal in Parallel = …

A

1/Rtotal = 1/R1 + 1/R2 + 1/R3 …

18
Q

Kirchoff’s First Law (Law of Conservation of Charge):

A

The Sum of the Current Entering a Junction Must Always Equal the Sum of the Current Leaving a Junction.

19
Q

What is a ‘Junction’?

A

In a Circuit, a Junction is a Point where at least Three Circuit Paths Meet.

20
Q

What is a ‘Branch’?

A

In a Circuit, a Branch is a Path Connecting Two Junctions.

21
Q

If a Circuit is Split into Two Branches, then the Current Before the Split Should Equal…

A

The Current After the Split.

22
Q

Charge is Conserved on Both Sides of a ___.

A

Junction.

23
Q

In a Series Circuit, the Current is the ___ Through All Components.

A

Same.

24
Q

In a Parallel Circuit, the Current ___ at the Junctions, & Each Branch has a Different Value of ___, Based on the…

A

Divides, Current. Rtotal of the Branch.

25
Q

Law of Conservation of Energy:

A

‘Energy is Never Created nor Destroyed, Only Transferred.’

26
Q

Kirchoff’s Second Law:

A

‘The Total EMF in a Closed Circuit = the Sum of the Potential Difference Across Each Component.’

27
Q

What is Kirchoff’s Second Law a Result of?

A

Kirchoff’s Second Law is a Result of the Law of Conservation of Energy.

28
Q

In a Series Circuit, the Voltage is Split Across All Components, Depending on their…

A

Resistances.

29
Q

In a Series Circuit, the Sum of the Voltages = …

A

The Total EMF of the Power Supply.

30
Q

In a Parallel Circuit, the Voltage is the Same Across Each…

A

Closed Loop.

31
Q

In a Parallel Circuit, the Sum of the Voltages of Each Close Circuit Loop = …

A

The Total EMF of the Power Supply.

32
Q

What are ‘Closed-Circuit Loops’?

A

Parallel Circuits are Made up of Two or More Closed-Circuit Loops.
Each Closed-Circuit Loop Acts as its own, Independent Series Circuit. Each One Separates at a Junction.

33
Q

Why are Parallel Circuits Very Useful for Home Wiring Systems?

A

Because Parallel Circuits are Made Up of Two or More Closed-Circuit Loops, which Act as Individual Series Circuits.

A-LEVEL PHY 3.5: Electricity (24 decks)

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