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GCSE Physics*** > Energy And Potential Difference In Circuits > Flashcards

Energy And Potential Difference In Circuits Flashcards

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1
Q

What is current ?

A

Current measures how fast charge flows around a circuit

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2
Q

What is current measured in?

A

Amps (A)

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3
Q

What is one amp equal too ?

A

One amp is equal to one columb of charge flowing per second

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4
Q

What is the equation linking current charge and time ?

A

Current = charge/time

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5
Q

What is voltage ?

A

Voltage measures how much energy the charge flowing around the circuit has

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6
Q

What is voltage measured in ?

A

Volts (V)

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7
Q

What is one volt equal to ?

A

One volt is one joule of energy per columb of charge flowing

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8
Q

What does voltage do ?

A

Voltage pushes charge around a circuit creating current. The higher the voltage the higher the current.

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9
Q

What is the equation linking voltage, resistance and current ?

A

Voltage = resistance x current

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10
Q

What does resistance do ?

A

• resistance opposes the flow of current around a circuit

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11
Q

As resistance increases what decreases ?

A

Current decreases

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12
Q

As resistance increases what also increases to maintain a given current ?

A

Voltage must increase to maintain a given current

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13
Q

What is resistance measured in ?

A

Ohms

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14
Q

What are voltage and current to each other ?

A

Proportional

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15
Q

What are resistant and voltage to each other ?

A

Proportional

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16
Q

What are resistance and current to each other ?

A

Inversely proportional

17
Q

Current is measured with an ammeter in series or in parallel ?

A

Series

18
Q

Voltage is measured with a voltmeter in series or in parallel ?

A

Parrell

19
Q

What characteristics are there in a series circuit ?

A
  • each component is directly connected to the next
  • each component receives a portion of the total voltage and the same current
  • if one component fails all the other components in the circuit fails
  • voltage is split between components depending on their resistance
20
Q

Characteristics of a parallel circuit

A
  • each component is on its own circuit
  • if one component fails all of the other components are unaffected
  • each component receives a portion of the total current and the same voltage
  • The current splits at Junctions
21
Q

Current in a series circuit is…

A

The same

22
Q

Current in a parallel circuit is…

A

Split

23
Q

Voltage in a series circuit is…

A

Split

24
Q

Voltage in a parallel circuit is…

A

The same

25
Q

What is an LDR ?

A

Light dependent resistor

26
Q

What is a thermistor ?

A

A temperature dependent resistor

27
Q

What are resistance and brightness to each other ?

A

Inversely proportional

28
Q

What is resistance and temperature to each other ?

A

Inversely proportional

29
Q

What is a diode ?

A

A diode only allows current to flow in One Direction because it has a high resistance

30
Q

What is the experiment for diodes, filament bulb, and resistor ?

A

Using ammeter and measuring the current with and without these components or with different voltage levels using a volt meter

GCSE Physics*** (18 decks)

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