2099301
Beschreibung
Quiz von giannini.chambers, aktualisiert more than 1 year ago
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Erstellt von giannini.chambers
vor mehr als 9 Jahre
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Frage 1
Frage
Temperature doesn't affect resistance
Antworten
- True
- False
Frage 2
Frage
(Resistance x Length)/Area= Resistivity
Antworten
- True
- False
Frage 3
Frage
Resistivity is the resistance between opposite faces on a 1m cube of a material
Antworten
- True
- False
Frage 4
Frage
A copper wire is heated up then connected to a supply. Describe what happens to the voltage drop across the wire.
Antworten
-
It increases
-
It decreases
-
It stays the same
Frage 5
Frage
What factors affect resistance
Antworten
-
Length
-
Temperature
-
Frequency
-
Area
-
Time
Frage 6
Frage
Two resistors are in parallel. The resistance will go:
Antworten
-
Up
-
Down
Frage 7
Frage
A voltage source has been applied to a resistor and a reading of 2A was found. Later it was found that the current has increased to 2.7A despite the voltage not changing.
Antworten
-
The temperature increased
-
The temperature decreased
Frage 8
Frage
What is the formula for the temperature coefficient of resistance
Antworten
-
R=Ro(1+α(T-To))
-
R=Ro(1xα(T-To))
-
Ro=R(1xα2))
-
R=Ro(αT)
Frage 9
Frage
Resistance=(Resistivity X Length)/Area
Antworten
- True
- False
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