e Flashcards
(15 cards)
1
Q
what is potential difference
A
force driving the flow of electrons
2
Q
what is current
A
the rate of flow of charge
3
Q
what is resistance
A
everything that resists or opposes the flow of electrons
4
Q
what is pd measured in
A
voltage
volts V
5
Q
what is current measured in
A
amperes
amps A
6
Q
what is resistance measured in
A
ohms Ω
7
Q
what way does current flow
A
current always flows form the positive to the negative
8
Q
what does V=IR stand for
A
V- pd
I-current
times
R-resistance
9
Q
do u times or divide V=IR
A
times
10
Q
to find resistance what do you do
A
rearrange the equation
R=V/I
11
Q
when filament lamp heats up…
A
increasing resistance
12
Q
diode
A
only allowed current to flow in one direction
13
Q
parallel
A
more than 1 pathway
14
Q
series
A
single loop
15
Q
A
