Physics (electronics, telecoms, using electricity, waves etc.)

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What unit is VOLTAGE measured in?
Volts
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What unit is CURRENT measured in?
Amperes
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What unit is RESISTANCE measured in?
Ohms
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How is a VOLTMETER connected in a circuit?
In parallel
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How is a AMMETER connected in a circuit?
In series (circuit is broken)
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What 5 features does a RADIO RECIEVER have?
Aerial, Tuner, Decoder, Amplifier, Loudspeaker
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What is the WAVE EQUATION?
speed = frequency x wavelength
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How many watts is a MEGAWATT?
1,000,000
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What to colours of a TV screen are mixed to make YELLOW?
Red + Green
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Why are the BRUSHES in an electric motor made of CARBON?
To reduce wear to the commutator
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What does FM stand for?
Frequency Modulated
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How does the curved dish of a RECIEVER work?
By focusing signals to a focal point
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At what voltage do most transistors switch on?
0.7 V
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Other cards in this set

Card 2

Front

What unit is CURRENT measured in?

Back

Amperes

Card 3

Front

What unit is RESISTANCE measured in?

Back

Preview of the front of card 3

Card 4

Front

How is a VOLTMETER connected in a circuit?

Back

Preview of the front of card 4

Card 5

Front

How is a AMMETER connected in a circuit?

Back

Preview of the front of card 5
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