Ohm’s Law Flashcards
1
Q
Apparatus
A
Low voltage power supply unit
Rheostat
Ammeter
Voltmeter
Connecting leads
Resistance wire
Switch
2
Q
Temperature remains constant
A
Keeping voltage low
Switching off current between readings to allow wire to cool
3
Q
Evaluation
A
Straight line through the origin.
Directly proportional.
4
Q
Calculations
A
R= V / I
V = IR
5
Q
Method
A
