Electric Circtuits - Physics Flashcards
what is current measured in?
amps
what is p.d. measured in?
Volts
what colour is the earth wire?
blue
what does ‘I’ mean in the equation P = IV
current
what does L.E.D stand for?
Light Emitting Diode
if there are 2 resistors in parallel, one with a resistance of 12 Ω the other as 3 Ω, what is the combined resistance of the circuit?
4 Ω
what does L.D.R stand for?
light dependant resistor
Is the p.d. shared or not shared in a series circuit?
shared
what colour is the neutral wire?
green/yellow
what does ‘t’ mean in the equation Q = I x t?
time
what does a thermistor measure?
temperature
what does ‘R’ mean in the equation P = I² R
resistance
what colour is the live wire?
brown
what is the average frequency of the live wire?
50Hz
what is the average p.d. of the earth wire?
0V
what is the average voltage of the UK?
230V
what does ‘P’ mean in the equation P = IV
power
what is the current?
flow of electrons
what does ‘Q’ mean in the equation E = VQ and give the units
charge, coulombs
what is resistance measured in?
Ohms
what does L.D.R stand for?
Light Dependant Resistor
what does ‘V’ mean in the equation P = IV
potential difference
what does ‘P’ mean in the equation P = IV and give the units
power, watts
