P2 4.4: More current-potential difference graphs.

All information was taken directly from the AQA revision guide with only the key points from P2 4.4.

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  • Created by: JSpencer
  • Created on: 07-03-16 14:14
What shape is the line on a current-potential difference graph for a filament bulb? Showing?
A curve, the current is not directly proportional to the potential difference.
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What happens to the filament bulb as the current increases?
The resistance of the filament increases.
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What increases as the temperature increases?
The resistance.
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Which way does the current flow in a diode?
In one direction only.
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What happens in the reverse direction in the diode?
There is a very high resistance so the current is zero.
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What happens to a LDR as the light falling on it gets brighter?
The resistance of the light-dependent resistor (LDR) decreases.
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What causes a thermistor resistance to go down?
The temperature goes up.
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Other cards in this set

Card 2

Front

What happens to the filament bulb as the current increases?

Back

The resistance of the filament increases.

Card 3

Front

What increases as the temperature increases?

Back

Preview of the front of card 3

Card 4

Front

Which way does the current flow in a diode?

Back

Preview of the front of card 4

Card 5

Front

What happens in the reverse direction in the diode?

Back

Preview of the front of card 5
View more cards

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