Key Concepts Flashcards
1
Q
What happens when an LDR is exposed to intense light ?
A
The resistance decreases.
2
Q
A circuit with a cell of 3V, with 2 voltmeters in series. What is the voltage in one of the voltmeters?
A
1.5V
3
Q
What happens to the resistivity of a circuit when the temperature increases?
A
The resistance increases.
4
Q
What determines the Critical Temperature of a semi-conductor?
A
The energy required to move an electron from the Valence band and the Conduction band in an atom.
5
Q
Electronvolt
A
Amount of energy an electron gains by passing through a voltage of 1V
