Electricity Flashcards
What happens to the resistance of a filament lamp as the temperature increases?
As the temperature increases, the resistance of a filament lamp also increases.
What happens to the resistance of a thermistor as it increases in temperature?
The resistance decreases as the temperature increases.
What happens to the resistance of a LDR as the light intensity increases?
The resistance decreases as the light intensity increases.
In what direction can the current flow through a diode?
Current can only flow one way through a diode.
Name an application of an LDR/thermistor.
In sensing circuits (e.g. lights turning on when dark/heating turning on when cold).
How does resistance add in series?
RTOT = R1 + R2
What happens to current in series/parallel circuits?
Current is the same everywhere in a series circuit. Current splits in a parallel circuit.
What happens to potential difference in series/parallel circuits?
Potential difference is the same on different paths in parallel; it splits across components in a series circuit.
What happens to the total resistance of two resistors in parallel?
The total resistance of two resistors in parallel is less than the resistance of the smallest resistor.
