P2.2 Controlling And Using Electric Currents Flashcards
What do we use to measure voltage?
A voltmeter
What happens to current in a parallel circuit?
What happens to voltage?
Current remains the same and voltage is split
What is another name for voltage?
Potential difference
What is resistance measured in?
Ohms
What is the equation for resistance?
Potential difference/current
What is a thermistor?
A heat dependent resistor
What is a LDR
A light dependent resistor
What is a diode?
A resistor that only allows current to flow one way, so A.C does not work
Do the resistances of LDRs and thermistors go up or down as the factor increases.
The resistance decreases as the factor increases
What is the equation for power?
Current*potential difference
What do we use to measure current?
An ammeter
What is the equation for energy transferred?
Power * time
