1
Q
what do resistors do
A
waste energy
can dim lights etc
2
Q
what are resistors
A
ohmic conductors
3
Q
what is the current through a resistor directly proportional to
A
the potential difference
4
Q
if current through a resistor is directly proportional to P.D what does this say about resistors
A
they are constant
5
Q
in other components what is resistance like
A
not constant and changes with current
6
Q
what is resistance like in a filament bulb
A
as current increases the resistance increases because temp is also increasing
7
Q
what is resistance like in a diode
A
one direction has a very high resistance the other is low
Physics - electricity
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