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GCSE Physics AQA > P4 - Electric circuits 1️⃣✅ > Flashcards

P4 - Electric circuits 1️⃣✅ Flashcards

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1
Q

What is an insulator?

A

An insulator is a material bad a conducting heat/electricity/ transferring enegy

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2
Q

What is a conductor?

A

A conductor is a material good at conducting electricity or heat/ energy

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3
Q

What are like charges?

A

When charges are like, they are the same therefore repel away from each other

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4
Q

What are unlike charges?

A

When charges are unlike, they are different/opposite therefore attracted to each other

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5
Q

What is an electric field?

A

A area around a charged object

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6
Q

What is a spark?

A

An abrupt electrical charge

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7
Q

What is current?

A

the measure of the flow of charged electrons around a circuit

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8
Q

What are the units for current?

A

A, Amps

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9
Q

What is the symbol for current?

A

I

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10
Q

What are the units for charge?

A

C, Coulombs

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11
Q

What is the symbol for charge?

A

Q

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12
Q

What is the equation that links current, charge and time?

A

I = Q/t

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13
Q

What is potential difference?

A

a measure of energy, per unit of charge, transferred between two points in a circuit

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14
Q

What are units for potential difference?

A

V, Volts

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15
Q

What is the symbol for potential difference?

A

V

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16
Q

What is voltage?

A

Voltage is the amount of energy transferred per coulomb of charge

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17
Q

What are the units for voltage?

A

V, Volts

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18
Q

What is the symbol for voltage?

A

V

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19
Q

What is a fuse?

A

A fuseiis a thin piece of wire that will melt if the current is too high e.g. breaks a circuit if a fault in an appliance causes too much current to flow

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20
Q

What is resistance?

A

Everything that resists/ opposes the flow of charged electrons

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21
Q

What are the units for resistance?

A

Ω, Ohms

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22
Q

What is the symbol for resistance?

A

R

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23
Q

What is ohms law?

A

the higher the current the lower the resistance
(V = I x R)

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24
Q

What is the equation that links resistance, current and potential difference?

A

V = I x R

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25
What is an IV curve?
A graph of current against voltage
26
What is a series circuit?
When components are connected in one loops, connected one after the other
27
What is a parallel circuit?
A parallel circuit is a circuit with more than one loop in it
28
What is the equation that links charge, energy transferred and potential difference?
E = Q x V
29
What is an acronym for the equation that links charge, energy transferred and potential difference?
Englands Queen Victoria
30
What is the eqauation that links power, current and voltage?
P = I x V
31
What is the equation that links power, current and resistance?
P = I(squared) x R
32
Current is _______ in a series circuit
the same across all the components
33
Potential difference is _______ in a series circuit
shared e.g. Vtotal = V1 + V2 + V3...
34
Resistance _______ in a series circuit
sum of all individual resistances of each component
35
Current is _______ in a parallel circuit
shared e.g. Itotal = I1 + I2 + I3...
36
Potential difference is _______ in a parallel circuit
the same across all components
37
Resistance _______ in a parallel circuit
lowers/ decreases the more components added
38
What does a diode do?
Allows current to flow in only one direction
39
What does a reisistor do?
Set the current in a circuit
40
What does a variable resistor do?
Vary the size of current in a series circuit
41
What does a thermistor do?
measures temperature of a circuit/ resistance increases as temp falls
42
What is the circuit symbol for an open switch?
43
What is the circuit symbol for a closed switch?
44
What is the circuit symbol for a cell?
45
What is the circuit symbol for a battery?
46
What is the circuit symbol for a diode?
47
What is the circuit symbol for a resistor
48
What is the circuit symbol for variable resistor?
49
What is the circuit symbol for a LED? | (light emitting diode)
50
What is the circuit symbol for a lamp?
51
What is the circuit symbol for a fuse?
52
What is the circuit symbol for a voltmeter?
53
What is the circuit symbol for an ammeter?
54
What is the circuit symbol for a thermistor?
55
What is the circuit symbol for an LDR? | (light dependent resistor)
56
Desicribe this graph
* Its a graph associated with a filament lamp * the reistance of the lamp increases as the temperature of the lamp increases
57
Describe this graph
* its a graph associated with a diode * the current in a diode flows only in one direction
58
Describe this graph
* its associated with a fixed resistor (or ohmic conductor) * and the current through it is directly proportional to the potential difference
59
In series circuits: * (V) Potential Difference is.... * (I) Current is... * (R) Resistance is ...
* shared * same * sum (added of each component)
60
In parallel circuits: * (V) Potential Difference is.... * (I) Current is... * (R) Resistance is ...
* same * shared * lower/decreases (the more components added)
61
What is direct potential difference?
Potential difference that always flows in the same direction
62
Voltmeters are connected in __________
Voltmeters are connected in parallel
63
Ammeters are connected in __________
Ammeters are connected in series
64
What is charge?
Charge is a measure of the total current that flowed within a period of time

GCSE Physics AQA (19 decks)

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