Physics Flashcards - Chapter 9

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Name this Circuit symbol:
Diode
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Name this Circuit symbol:
Thermistor
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Name this Circuit symbol:
LED (Light-emitting diode)
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Name this Circuit symbol:
LDR (Light-dependent resistor)
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Name these Circuit symbols:
Voltmeter and Ammeter
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What is the equation linking Potential difference, Work done and Charge?
Potential difference = Work done / Charge
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What is 1 V in base units?
1 J C-1 = 1 kg m2 s-3 A-1
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What is the definition of Potential difference?
The work done transferring energy from electrical to other forms, per unit charge.
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What is the definition of EMF?
The work done transferring energy from other forms to electrical, per unit charge.
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What equations can you use to calculate the work done?
Work done = Potential difference x Charge, or, EMF x Charge
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If the work done on one electron = gain in kinetic energy, what equation can you use?
eV = 1/2 x m x v (squared)
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What is the equation linking resistance, potential difference and current?
V = IR, Potential difference = Current x Resistance
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What is the unit of Resistance? What is it in base units?
Ohm, 1 Ohm = 1 V A-1 = 1 kg m2 s-3 A-2
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What is Ohm's Law?
The current is directly proportional to the potential difference in a wire, provided its kept at a constant temperature.
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Card 2

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Name this Circuit symbol:

Back

Thermistor

Card 3

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Back

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Card 4

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Name this Circuit symbol:

Back

Preview of the front of card 4

Card 5

Front

Name these Circuit symbols:

Back

Preview of the front of card 5
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