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Physics iGCSE > Physics- Electricity > Flashcards

Physics- Electricity Flashcards

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0
Q

Energy

A

E = IVt

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1
Q

Power

A

P = IV

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2
Q

Voltage

A

V = IR

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3
Q

Charge

A

Q = It

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4
Q

What are the metal parts of a plug mage out of, why?

A

Cooper or brass, very good conductors

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5
Q

What is the case, cable grip and cable insulation made out of, why?

A

Rubber or plastic, good insulators and flexible

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6
Q

When an electric current passes through a resistor…

A

They heat up, increases resistance, less current flows

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7
Q

Current is…

A

The rate of flow of charge round the circuit

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8
Q

Increase the voltage… (current)

A

More current will flow

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9
Q

Increase the resistance…(current)

A

Less current will flow

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10
Q

current-voltage graphs

A

Current - y axis

Voltage - x axis

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11
Q

I-V graph

metal filament lamp

A

(Curve)

As temp of metal filament increases, resistance increases

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12
Q

I-V graph

Wire

A

Current (at constant temperature) is proportional to voltage

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13
Q

I-V graph

Different resistors

A

Current through resistor (at constant temperature) is proportional to voltage. Different resistors have different resistances, therefore different slopes.

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14
Q

V-I graph

Diode

A

Current only flow through diode in one direction.

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15
Q

Fuse symbol

A

________
| |
———————-
|________|

16
Q

LED symbol

A

↗️↗️

———▶️|———

17
Q

Microphone symbol

A

➰

_______| |______

18
Q

Electric bell symbol

A

(semicircle)

______| |______

19
Q

Heater symbol

A

________

——-|__|__|__|——

20
Q

Diode symbol

A

—–▶️|—–

21
Q

LDR symbol

A

_↘️↘️___

—|________|—

22
Q

Thermistor symbol

A

______/__
—|_____/___|—
_/

23
Q

Heater symbol

A

________

——-|__|__|__|——

24
Q

Diode symbol

A

—–▶️|—–

25
Q

LDR symbol

A

_↘️↘️___

—|________|—

26
Q

Thermistor symbol

A

______/__
—|_____/___|—
_/

Physics iGCSE (7 decks)

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