3.7a Flashcards
(3 cards)
1
Q
What are the three factors affecting electrical resistance?
A
The length of the object.
The cross-sectional area of the object.
The material from which the object is made.
2
Q
What effect does length have on resistance?
A
Resistance increases in direct proportion to the length of a resistor (if the material is doubled in length, then the resistance is also doubled)
3
Q
What effect does cross section area have on resistance?
A
Resistance increases in inverse proportion to the cross-sectional area of a resistor. (if the resistor is doubled in cross-sectional area, then the resistance is halved.)
