Resistance Flashcards
1
Q
Material with many free electrons
A
Conductor
2
Q
4 Conductors
A
Copper
Carbon
Silver
Gold
3
Q
Material with few free electrons
A
Insulator
4
Q
4 insulators
A
Rubber paper plastic glass
5
Q
Different factors which affect resistance across a conductor
A
Cross sectional area
Heat
Length
Material
6
Q
State ohms law
A
A current flowing through a conductor is directly proportional to the applied voltage across it, providing the temperature remains constant and is inversely proportional to the resistance.
7
Q
What is unit for resistance
A
Ohm
8
Q
Resistance formula in series circuit
A
Rt=R¹+R²+R³
9
Q
Formula for parallel circuit resistance
A
Rt=1/R¹ + 1/R² + 1/R³
10
Q
Check for series circuit resistance
A
Lower than lowest value of resistance
