Resistance And Length Flashcards
1
Q
Variables
A
Independent is length of wire.
Dependant is resistance of wire.
Controlled variables are temperature and area of cross section of wire.
2
Q
Apparatus
A
Low voltage power supply unit
Rheostat
Ammeter
Voltmeter
Connecting leads
Resistance wire
Switch
Metre ruler
3
Q
Method
A
4
Q
Relationship
A
Directly proportional.
R = kL
K = R / L