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power and electricity
Transcript of power and electricity
which work is done.It
calculated using the
P=IV which simple is
current * voltage The symbol for
power is P.The unit
of measurement is watts. calculate the power in
flowing through a bulb
if the voltage in a circuit is
12V and the current is flowing
is 3A 1.What I want to find..
2.What do i have...
V=12V & I=3A
3.What do we have
P= 36W so lets rememeber
V=IR and P=IV
So figure this one out!
what is the wattage needed
for a bulb to work in a circuit
where the resistance is 15 ohms and
the current flowing through is 2 amps Pair up with some one and discuss the need for understanding power in everyday life 1.what do you what to find
2.what do you have
I=2amps and R=15ohms
3.what do you know
P=IV but i dont have V
so before i find P i have to find V
V= 2 * 15