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Question for physics experts...
What to apply.. H=I^2RT or H=V^2/RT
Give reason....
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NailaRabab:
yes obviously
q aapko kya laga???
nhi to
aap kya karti ho
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9
You should apply H=v^2/Rt
You have 3 different equations for Heat.
H=I2Rt=V2Rt=VIt
So, when the Power of a device depends upon the Current passing through it, then you will use the first formula where
H∝ I2
When the Power depends on Voltage, then use the second formula where H∝ V2
The first equation is used when device is connected in series. The second is used when device is connected in Parallel. The third is used in a simple circuit.
And
According to joules law of heating,in the expression H=I2Rt ,the heat produced is directly proportional to resistance of wire when the current flowing through the resistor is constant.
In the expression , H=v2 /Rt the heat produced is inversely proportional to resistance of wire when voltage across the resistor is constant.
Rishikesh.
You have 3 different equations for Heat.
H=I2Rt=V2Rt=VIt
So, when the Power of a device depends upon the Current passing through it, then you will use the first formula where
H∝ I2
When the Power depends on Voltage, then use the second formula where H∝ V2
The first equation is used when device is connected in series. The second is used when device is connected in Parallel. The third is used in a simple circuit.
And
According to joules law of heating,in the expression H=I2Rt ,the heat produced is directly proportional to resistance of wire when the current flowing through the resistor is constant.
In the expression , H=v2 /Rt the heat produced is inversely proportional to resistance of wire when voltage across the resistor is constant.
Rishikesh.
okay... how did u get to know that here 2nd one is applicable
no case of series and parallel here
we have learned in science about combustion and flam ch in class 8 the activitie in that chap tell about this
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4
Hope this will help u... :-)
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