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# power and electricity

calculating power to determine the wattage that an electrical component would need to operate

by

Tweet## anton dookoo

on 29 November 2012#### Transcript of power and electricity

calculating electricity lets begin so today we look at what is power what is power power is the rate at

which work is done.It

calculated using the

following equation

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..

power

2.What do i have...

V=12V & I=3A

3.What do we have

P=VI

4.Let's solve

P= 12*3

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

power

2.what do you have

I=2amps and R=15ohms

3.what do you know

P=IV V=IR

4.lets solve

P=IV but i dont have V

so before i find P i have to find V

V= IR

V= 2 * 15

V= 30

then

P= IV

P= 2*30

P=60 watts

Full transcriptwhich work is done.It

calculated using the

following equation

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..

power

2.What do i have...

V=12V & I=3A

3.What do we have

P=VI

4.Let's solve

P= 12*3

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

power

2.what do you have

I=2amps and R=15ohms

3.what do you know

P=IV V=IR

4.lets solve

P=IV but i dont have V

so before i find P i have to find V

V= IR

V= 2 * 15

V= 30

then

P= IV

P= 2*30

P=60 watts