Iv Characteristics Flashcards
1
Q
What happens to a fixed resistor?
A
VOLTAGE and POTENTIAL DIFFERENCE is DIRECTLY PROPORTIONAL TO CURRENT
GRADIENT stays the same and is constant therefore resistant is also
2
Q
What is ohmic ?
A
When current is direct proportional to p.d
3
Q
What happens to a filament lamp ?
A
Current INCREASES
temperature INCREASES
resistance INCREASES because temperature does also
so LESS CURRENT FLOWS
4
Q
What happens with a diode ?
A
Current is 0 so Resistance is VERY LARGE
so current will flow and resistance less
5
Q
What happens to LDR ?
A
Light resistance increase
Resistance decrease
Potential difference and voltage is directly proportional to current
6
Q
What happens to thermistor ?
A
Voltage and potential difference to current
Temp increases
Resistance decreases
