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can u tell me when to use P=VI
formula and when to use the other ones
P=I(square)R and P=V(sqaure)/R
formula and when to use the other ones
P=I(square)R and P=V(sqaure)/R
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Problem in physics
- Thread starter Arslanjaved
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It depends on the data you are provided with...
yeah exactly if they give u current and resistence use that .... and so on
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question number 34 of June 2006 p1
help me with that which formula to use and what is the logic behind that ?
help me with that which formula to use and what is the logic behind that ?
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Find the total current.
V=IR
12=I(3+1)
I=3
Find the voltage dissipated in heater. (3/4)12=9V
Now use the formula P=VI
P=9 into 3= 27W Answer.
You can post your doubts here : AS Physics P1 MCQs Preparation Thread.
V=IR
12=I(3+1)
I=3
Find the voltage dissipated in heater. (3/4)12=9V
Now use the formula P=VI
P=9 into 3= 27W Answer.
You can post your doubts here : AS Physics P1 MCQs Preparation Thread.