chapter 14 electricity Flashcards
1
Q
like charges…
A
repel
2
Q
unlike charges…
A
attract
3
Q
resistance
A
anything that opposes an electric current, measured in Ohms
4
Q
Ohms law
A
the current that passes through a resistor at a constant temperature is directly proportional to the potential difference
5
Q
electric current
A
flow of charge, measured in Amperes, A
6
Q
series circuit
A
-linear pathways
-p.d is shared
-current is the same
7
Q
parallel circuits
A
-multiple pathways
-total current= sum of current going through separate components
-p.d is same
8
Q
sensor circuit
A
responds to changes in the surroundings
9
Q
a sensor circuit containing an LDR…
A
-can be used to switch on a device when the light intensity decreases
10
Q
a sensor circuit containing a thermistor…
A
-can be used to switch on a device when the temperature increases to much
